Constantine II of Scotland
Encyclopedia
Constantine, son of Áed was an early King of Scotland, known then by the Gaelic name Alba. The Kingdom of Alba
Kingdom of Alba
The name Kingdom of Alba pertains to the Kingdom of Scotland between the deaths of Donald II in 900, and of Alexander III in 1286 which then led indirectly to the Scottish Wars of Independence...

, a name which first appears in Constantine's lifetime, was in northern Great Britain
Great Britain
Great Britain or Britain is an island situated to the northwest of Continental Europe. It is the ninth largest island in the world, and the largest European island, as well as the largest of the British Isles...

. The core of the kingdom was formed by the lands around the River Tay
River Tay
The River Tay is the longest river in Scotland and the seventh-longest in the United Kingdom. The Tay originates in western Scotland on the slopes of Ben Lui , then flows easterly across the Highlands, through Loch Dochhart, Loch Lubhair and Loch Tay, then continues east through Strathtay , in...

. Its southern limit was the River Forth
River Forth
The River Forth , long, is the major river draining the eastern part of the central belt of Scotland.The Forth rises in Loch Ard in the Trossachs, a mountainous area some west of Stirling...

, northwards it extended towards the Moray Firth
Moray Firth
The Moray Firth is a roughly triangular inlet of the North Sea, north and east of Inverness, which is in the Highland council area of north of Scotland...

 and perhaps to Caithness
Caithness
Caithness is a registration county, lieutenancy area and historic local government area of Scotland. The name was used also for the earldom of Caithness and the Caithness constituency of the Parliament of the United Kingdom . Boundaries are not identical in all contexts, but the Caithness area is...

, while its western limits are uncertain. Constantine's grandfather Kenneth I of Scotland
Kenneth I of Scotland
Cináed mac Ailpín , commonly Anglicised as Kenneth MacAlpin and known in most modern regnal lists as Kenneth I was king of the Picts and, according to national myth, first king of Scots, earning him the posthumous nickname of An Ferbasach, "The Conqueror"...

 (Cináed mac Ailpín, died 858) was the first of the family recorded as a king, but as king of the Picts. This change of title, from king of the Picts to king of Alba, is part of a broader transformation of Pictland and the origins of the Kingdom of Alba
Origins of the Kingdom of Alba
The Origins of the Kingdom of Alba pertains to the origins of the Kingdom of Alba, or the Gaelic Kingdom of Scotland, either as a mythological event or a historical process, during the Early Middle Ages.-Medieval version:...

 are traced to Constantine's lifetime.

His reign, like those of his predecessors, was dominated by the actions of Viking
Viking
The term Viking is customarily used to refer to the Norse explorers, warriors, merchants, and pirates who raided, traded, explored and settled in wide areas of Europe, Asia and the North Atlantic islands from the late 8th to the mid-11th century.These Norsemen used their famed longships to...

 rulers in the British Isles
British Isles
The British Isles are a group of islands off the northwest coast of continental Europe that include the islands of Great Britain and Ireland and over six thousand smaller isles. There are two sovereign states located on the islands: the United Kingdom of Great Britain and Northern Ireland and...

, particularly the Uí Ímair
Uí Ímair
The Uí Ímair , or Dynasty of Ivar, were an enormous royal and imperial Norse dynasty who ruled Northern England, the Irish Sea region and Kingdom of Dublin, and the western coast of Scotland, including the Hebrides, from the mid 9th century, losing control of the first in the mid 10th, but the rest...

 ("the grandsons of Ímar", or Ivar the Boneless
Ivar the Boneless
Ivar Ragnarsson nicknamed the Boneless , was a Viking leader and by reputation also a berserker. By the late 11th century he was known as a son of the powerful Ragnar Lodbrok, ruler of an area probably comprising parts of modern-day Denmark and Sweden.-Invader:In the autumn of AD 865, with his...

). During Constantine's reign the rulers of the southern kingdoms of Wessex
Wessex
The Kingdom of Wessex or Kingdom of the West Saxons was an Anglo-Saxon kingdom of the West Saxons, in South West England, from the 6th century, until the emergence of a united English state in the 10th century, under the Wessex dynasty. It was to be an earldom after Canute the Great's conquest...

 and Mercia
Mercia
Mercia was one of the kingdoms of the Anglo-Saxon Heptarchy. It was centred on the valley of the River Trent and its tributaries in the region now known as the English Midlands...

, later the Kingdom of England
Kingdom of England
The Kingdom of England was, from 927 to 1707, a sovereign state to the northwest of continental Europe. At its height, the Kingdom of England spanned the southern two-thirds of the island of Great Britain and several smaller outlying islands; what today comprises the legal jurisdiction of England...

, extended their authority northwards into the disputed kingdoms of Northumbria
Northumbria
Northumbria was a medieval kingdom of the Angles, in what is now Northern England and South-East Scotland, becoming subsequently an earldom in a united Anglo-Saxon kingdom of England. The name reflects the approximate southern limit to the kingdom's territory, the Humber Estuary.Northumbria was...

. At first allied with the southern rulers against the Vikings, Constantine in time came into conflict with them. King Æthelstan
Athelstan of England
Athelstan , called the Glorious, was the King of England from 924 or 925 to 939. He was the son of King Edward the Elder, grandson of Alfred the Great and nephew of Æthelflæd of Mercia...

 was successful in securing Constantine's submission in 927 and 934, but the two again fought when Constantine, allied with the Strathclyde Britons and the Viking king of Dublin, invaded Æthelstan's kingdom in 937, only to be defeated at the great battle of Brunanburh
Battle of Brunanburh
The Battle of Brunanburh was an English victory in 937 by the army of Æthelstan, King of England, and his brother Edmund over the combined armies of Olaf III Guthfrithson, the Norse-Gael King of Dublin, Constantine II, King of Scots, and Owen I, King of Strathclyde...

. In 943 Constantine abdicated the throne and retired to the Céli Dé (Culdee) monastery of St Andrews
St Andrews
St Andrews is a university town and former royal burgh on the east coast of Fife in Scotland. The town is named after Saint Andrew the Apostle.St Andrews has a population of 16,680, making this the fifth largest settlement in Fife....

 where he died in 952. He was succeeded by his predecessor's son Malcolm I
Malcolm I of Scotland
Máel Coluim mac Domnaill was king of Scots , becoming king when his cousin Causantín mac Áeda abdicated to become a monk...

 (Máel Coluim mac Domnaill).

Constantine's reign of 43 years, exceeded in Scotland only by that of King William the Lion
William I of Scotland
William the Lion , sometimes styled William I, also known by the nickname Garbh, "the Rough", reigned as King of the Scots from 1165 to 1214...

 before the Union of the Crowns
Union of the Crowns
The Union of the Crowns was the accession of James VI, King of Scots, to the throne of England, and the consequential unification of Scotland and England under one monarch. The Union of Crowns followed the death of James' unmarried and childless first cousin twice removed, Queen Elizabeth I of...

 in 1603, is believed to have played a defining part in the gaelicisation of Pictland, in which his patronage of the Irish Céli Dé monastic reformers was a significant factor. During his reign the words "Scots" and "Scotland" are first used to mean part of what is now Scotland
Scotland
Scotland is a country that is part of the United Kingdom. Occupying the northern third of the island of Great Britain, it shares a border with England to the south and is bounded by the North Sea to the east, the Atlantic Ocean to the north and west, and the North Channel and Irish Sea to the...

. The earliest evidence for the ecclesiastical and administrative institutions which would last until the Davidian Revolution
Davidian Revolution
The Davidian Revolution is a term given by many scholars to the changes which took place in the Kingdom of Scotland during the reign of David I of Scotland...

 also appears at this time.

Sources

Compared to neighbouring Ireland
Ireland
Ireland is an island to the northwest of continental Europe. It is the third-largest island in Europe and the twentieth-largest island on Earth...

 and Anglo-Saxon England, few records of 9th- and 10th-century events in Scotland survive. The main local source from the period is the Chronicle of the Kings of Alba
Chronicle of the Kings of Alba
The Chronicle of the Kings of Alba, or Scottish Chronicle, is a short written chronicle of the Kings of Alba, covering the period from the time of Kenneth MacAlpin until the reign of Kenneth II . W.F...

, a list of kings from Kenneth MacAlpin (died 858) to Kenneth II
Kenneth II of Scotland
Cináed mac Maíl Coluim was King of Scots...

 (Cináed mac Maíl Coluim, died 995). The list survives in the Poppleton Manuscript
Poppleton manuscript
The Poppleton Manuscript is the name given to the fourteenth century codex likely compiled by Robert of Poppleton, a Carmelite friar who was the Prior of Hulne, near Alnwick. The manuscript contains numerous works, such as a map of the world , and works by Orosius, Geoffrey of Monmouth and Gerald...

, a 13th-century compilation. Originally simply a list of kings with reign lengths, the other details contained in the Poppleton Manuscript version were added in the 10th and 12th centuries. In addition to this, later king lists survive. The earliest genealogical records of the descendants of Kenneth MacAlpin may date from the end of the 10th century, but their value lies more in their context, and the information they provide about the interests of those for whom they were compiled, than in the unreliable claims they contain.

For narrative history the principal sources are the Anglo-Saxon Chronicle
Anglo-Saxon Chronicle
The Anglo-Saxon Chronicle is a collection of annals in Old English chronicling the history of the Anglo-Saxons. The original manuscript of the Chronicle was created late in the 9th century, probably in Wessex, during the reign of Alfred the Great...

and the Irish annals
Irish annals
A number of Irish annals were compiled up to and shortly after the end of Gaelic Ireland in the 17th century.Annals were originally a means by which monks determined the yearly chronology of feast days...

. The evidence from charter
Charter
A charter is the grant of authority or rights, stating that the granter formally recognizes the prerogative of the recipient to exercise the rights specified...

s created in the Kingdom of England
Kingdom of England
The Kingdom of England was, from 927 to 1707, a sovereign state to the northwest of continental Europe. At its height, the Kingdom of England spanned the southern two-thirds of the island of Great Britain and several smaller outlying islands; what today comprises the legal jurisdiction of England...

 provides occasional insight into events in northern Britain. While Scandinavia
Scandinavia
Scandinavia is a cultural, historical and ethno-linguistic region in northern Europe that includes the three kingdoms of Denmark, Norway and Sweden, characterized by their common ethno-cultural heritage and language. Modern Norway and Sweden proper are situated on the Scandinavian Peninsula,...

n sagas
Sagàs
Sagàs is a small town and municipality located in Catalonia, in the comarca of Berguedà. It is located in the geographical area of the pre-Pyrenees.-Population:...

 describe events in 10th-century Britain, their value as sources of historical narrative, rather than documents of social history, is disputed. Mainland European sources rarely concern themselves with affairs in Britain, and even less commonly with events in northern Britain, but the life of Saint Cathróe of Metz
Cathróe of Metz
Saint Cathróe was a monk and abbot. His life is recorded in a hagiography written soon after his death by a monk at the monastery of Saint Felix at Metz, where Cathróe was abbot...

, a work of hagiography
Hagiography
Hagiography is the study of saints.From the Greek and , it refers literally to writings on the subject of such holy people, and specifically to the biographies of saints and ecclesiastical leaders. The term hagiology, the study of hagiography, is also current in English, though less common...

 written in Germany at the end of the 10th century, provides plausible details of the saint's early life in north Britain.

While the sources for north-eastern Britain, the lands of the kingdom of Northumbria
Northumbria
Northumbria was a medieval kingdom of the Angles, in what is now Northern England and South-East Scotland, becoming subsequently an earldom in a united Anglo-Saxon kingdom of England. The name reflects the approximate southern limit to the kingdom's territory, the Humber Estuary.Northumbria was...

 and the former Pictland, are limited and late, those for the areas on the Irish Sea
Irish Sea
The Irish Sea separates the islands of Ireland and Great Britain. It is connected to the Celtic Sea in the south by St George's Channel, and to the Atlantic Ocean in the north by the North Channel. Anglesey is the largest island within the Irish Sea, followed by the Isle of Man...

 and Atlantic coasts—the modern regions of north-west England and all of northern and western Scotland—are non-existent, and archaeology
Archaeology
Archaeology, or archeology , is the study of human society, primarily through the recovery and analysis of the material culture and environmental data that they have left behind, which includes artifacts, architecture, biofacts and cultural landscapes...

 and toponymy
Toponymy
Toponymy is the scientific study of place names , their origins, meanings, use and typology. The word "toponymy" is derived from the Greek words tópos and ónoma . Toponymy is itself a branch of onomastics, the study of names of all kinds...

 are of primary importance.

Pictland from Constantín mac Fergusa to Constantine I

The dominant kingdom in eastern Scotland before the Viking Age
Viking Age
Viking Age is the term for the period in European history, especially Northern European and Scandinavian history, spanning the late 8th to 11th centuries. Scandinavian Vikings explored Europe by its oceans and rivers through trade and warfare. The Vikings also reached Iceland, Greenland,...

 was the northern Pictish kingdom of Fortriu
Fortriu
Fortriu or the Kingdom of Fortriu is the name given by historians for an ancient Pictish kingdom, and often used synonymously with Pictland in general...

 on the shores of the Moray Firth
Moray Firth
The Moray Firth is a roughly triangular inlet of the North Sea, north and east of Inverness, which is in the Highland council area of north of Scotland...

. By the 9th century, the Gaels
Gaels
The Gaels or Goidels are speakers of one of the Goidelic Celtic languages: Irish, Scottish Gaelic, and Manx. Goidelic speech originated in Ireland and subsequently spread to western and northern Scotland and the Isle of Man....

 of Dál Riata
Dál Riata
Dál Riata was a Gaelic overkingdom on the western coast of Scotland with some territory on the northeast coast of Ireland...

 (Dalriada) were subject to the kings of Fortriu of the family of Constantín mac Fergusa (Constantine son of Fergus). Constantín's family dominated Fortriu after 789 and perhaps, if Constantín was a kinsman of Óengus I of the Picts
Óengus I of the Picts
Óengus son of Fergus , was king of the Picts from 732 until his death in 761. His reign can be reconstructed in some detail from a variety of sources.Óengus became the chief king in Pictland following a period of civil war in the late 720s...

 (Óengus son of Fergus), from around 730. The dominance of Fortriu came to an end in 839 with a defeat by Viking armies reported by the Annals of Ulster
Annals of Ulster
The Annals of Ulster are annals of medieval Ireland. The entries span the years between AD 431 to AD 1540. The entries up to AD 1489 were compiled in the late 15th century by the scribe Ruaidhrí Ó Luinín, under his patron Cathal Óg Mac Maghnusa on the island of Belle Isle on Lough Erne in the...

in which King Uen
Uen of the Picts
Uuen [Wen] or Eogán in Gaelic was king of the Picts, or of Fortriu , in what is now Scotland....

 of Fortriu and his brother Bran, Constantín's nephews, together with the king of Dál Riata, Áed mac Boanta
Áed mac Boanta
Áed mac Boanta is believed to have been a king of Dál Riata.The only reference to Áed in the Irish annals is found in the Annals of Ulster, where it is recorded that "Eóganán mac Óengusa, Bran mac Óengusa, Áed mac Boanta, and others almost innumerable" in a battle fought by the men of Fortriu...

, "and others almost innumerable" were killed. These deaths led to a period of instability lasting a decade as several families attempted to establish their dominance in Pictland. By around 848 Kenneth MacAlpin
Kenneth I of Scotland
Cináed mac Ailpín , commonly Anglicised as Kenneth MacAlpin and known in most modern regnal lists as Kenneth I was king of the Picts and, according to national myth, first king of Scots, earning him the posthumous nickname of An Ferbasach, "The Conqueror"...

 had emerged as the winner.

Later national myth made Kenneth MacAlpin the creator of the kingdom of Scotland
Kingdom of Scotland
The Kingdom of Scotland was a Sovereign state in North-West Europe that existed from 843 until 1707. It occupied the northern third of the island of Great Britain and shared a land border to the south with the Kingdom of England...

, the founding of which was dated from 843, the year in which he was said to have destroyed the Picts and inaugurated a new era. The historical record for 9th century Scotland is meagre, but the Irish annals and the 10th-century Chronicle of the Kings of Alba agree that Kenneth was a Pictish king, and call him "king of the Picts" at his death. The same style is used of Kenneth's brother Donald I
Donald I of Scotland
Domnall mac Ailpín ; was king of the Picts from 858 to 862...

 (Domnall mac Ailpín) and sons Constantine I
Constantine I of Scotland
Causantín or Constantín mac Cináeda was a king of the Picts. He is often known as Constantine I, in reference to his place in modern lists of kings of Scots, though contemporary sources described Causantín only as a Pictish king...

 (Constantín mac Cináeda) and Áed
Áed of Scotland
Áed mac Cináeda was a son of Cináed mac Ailpín . He became king of the Picts in 877 when he succeeded his brother Constantín mac Cináeda. He was nicknamed Áed of the White Flowers, the Wing-footed or the white-foot .The Chronicle of the Kings of Alba says of Áed: "Edus [Áed] held the same [i.e....

 (Áed mac Cináeda).

The kingdom ruled by Kenneth's descendants—older works used the name House of Alpin
House of Alpin
The House of Alpin is the name given to the kin-group which ruled in Pictland and then the kingdom of Alba from the advent of Cináed mac Ailpín in the 840s until the death of Máel Coluim mac Cináeda in 1034....

 to describe them but descent from Kenneth was the defining factor, Irish sources referring to Clann Cináeda meic Ailpín ("the Clan of Kenneth MacAlpin") —lay to the south of the previously dominant kingdom of Fortriu, centred in the lands around the River Tay
River Tay
The River Tay is the longest river in Scotland and the seventh-longest in the United Kingdom. The Tay originates in western Scotland on the slopes of Ben Lui , then flows easterly across the Highlands, through Loch Dochhart, Loch Lubhair and Loch Tay, then continues east through Strathtay , in...

. The extent of Kenneth's nameless kingdom is uncertain, but it certainly extended from the Firth of Forth
Firth of Forth
The Firth of Forth is the estuary or firth of Scotland's River Forth, where it flows into the North Sea, between Fife to the north, and West Lothian, the City of Edinburgh and East Lothian to the south...

 in the south to the Mounth
Mounth
The Mounth is the range of hills on the southern edge of Strathdee in northeast Scotland. It was usually referred to with the article, i.e. "the Mounth". The name is a corruption of the Scottish Gaelic monadh which in turn is akin to the Welsh mynydd, and may be of Pictish origin...

 in the north. Whether it extended beyond the mountainous spine of north Britain—Druim Alban—is unclear. The core of the kingdom was similar to the old counties of Mearns
Kincardineshire
The County of Kincardine, also known as Kincardineshire or The Mearns was a local government county on the coast of northeast Scotland...

, Forfar, Perth
Perthshire
Perthshire, officially the County of Perth , is a registration county in central Scotland. It extends from Strathmore in the east, to the Pass of Drumochter in the north, Rannoch Moor and Ben Lui in the west, and Aberfoyle in the south...

, Fife
Fife
Fife is a council area and former county of Scotland. It is situated between the Firth of Tay and the Firth of Forth, with inland boundaries to Perth and Kinross and Clackmannanshire...

, and Kinross
Kinross-shire
Kinross-shire or the County of Kinross is a registration county, electoral ward and historic county in the Perth and Kinross council area in the east central Lowlands of Scotland...

. Among the chief ecclesiastical centres named in the records are Dunkeld
Dunkeld
Dunkeld is a small town in Strathtay, Perth and Kinross, Scotland. It is about 15 miles north of Perth on the eastern side of the A9 road into the Scottish Highlands and on the opposite side of the Tay from the Victorian village of Birnam. Dunkeld and Birnam share a railway station, on the...

, probably seat of the bishop of the kingdom, and Cell Rígmonaid (modern St Andrews
St Andrews
St Andrews is a university town and former royal burgh on the east coast of Fife in Scotland. The town is named after Saint Andrew the Apostle.St Andrews has a population of 16,680, making this the fifth largest settlement in Fife....

).

Kenneth's son Constantine died in 876, probably killed fighting against a Viking army which had come north from Northumbria in 874. According to the king lists, he was counted the 70th and last king of the Picts in later times.

Britain and Ireland at the end of the 9th century

In 899 Alfred the Great
Alfred the Great
Alfred the Great was King of Wessex from 871 to 899.Alfred is noted for his defence of the Anglo-Saxon kingdoms of southern England against the Vikings, becoming the only English monarch still to be accorded the epithet "the Great". Alfred was the first King of the West Saxons to style himself...

, king of Wessex
Wessex
The Kingdom of Wessex or Kingdom of the West Saxons was an Anglo-Saxon kingdom of the West Saxons, in South West England, from the 6th century, until the emergence of a united English state in the 10th century, under the Wessex dynasty. It was to be an earldom after Canute the Great's conquest...

, died leaving his son Edward the Elder
Edward the Elder
Edward the Elder was an English king. He became king in 899 upon the death of his father, Alfred the Great. His court was at Winchester, previously the capital of Wessex...

 as ruler of Britain south of the River Thames
River Thames
The River Thames flows through southern England. It is the longest river entirely in England and the second longest in the United Kingdom. While it is best known because its lower reaches flow through central London, the river flows alongside several other towns and cities, including Oxford,...

 and his daughter Æthelflæd and son-in-law Æthelred ruling the western, English part of Mercia
Mercia
Mercia was one of the kingdoms of the Anglo-Saxon Heptarchy. It was centred on the valley of the River Trent and its tributaries in the region now known as the English Midlands...

. The situation in the Danish kingdoms of eastern Britain is less clear. King Eohric
Eohric of East Anglia
Eohric was king of East Anglia. Seemingly of Scandinavian origin, his name is the Old English form of the Old Norse Eiríkr, little is known of Eohric or of East Anglia in his time....

 was probably ruling in East Anglia
East Anglia
East Anglia is a traditional name for a region of eastern England, named after an ancient Anglo-Saxon kingdom, the Kingdom of the East Angles. The Angles took their name from their homeland Angeln, in northern Germany. East Anglia initially consisted of Norfolk and Suffolk, but upon the marriage of...

, but no dates can reliably be assigned to the successors of Guthfrith of York
Guthfrith, King of York
Guthfrith was the king of Northumbria from circa 883 until his death.The first known king of Viking York, Halfdan, was expelled in 877. In c. 883, Symeon of Durham's History of the Kings simply states, "Guthred, from a slave, was made king", but his History of the Church of Durham gives a longer...

 in Northumbria. It is known that Guthfrith was succeeded by Sigurd and Cnut, although whether these men ruled jointly or one after the other is uncertain. Northumbria may have been divided by this time between the Viking kings in York and the local rulers, perhaps represented by Eadulf
Eadulf I of Bernicia
Eadulf was a ruler in Northumbria in the early tenth century.The history of Northumbria in the ninth and tenth centuries is poorly recorded. English sources generally date from the twelfth century although some more nearly contemporary Irish annals report some events in Northumbria...

, based at Bamburgh
Bamburgh
Bamburgh is a large village and civil parish on the coast of Northumberland, England. It has a population of 454.It is notable for two reasons: the imposing Bamburgh Castle, overlooking the beach, seat of the former Kings of Northumbria, and at present owned by the Armstrong family ; and its...

 who controlled the lands from the River Tyne
River Tyne
The River Tyne is a river in North East England in Great Britain. It is formed by the confluence of two rivers: the North Tyne and the South Tyne. These two rivers converge at Warden Rock near Hexham in Northumberland at a place dubbed 'The Meeting of the Waters'.The North Tyne rises on the...

 or River Tees
River Tees
The River Tees is in Northern England. It rises on the eastern slope of Cross Fell in the North Pennines, and flows eastwards for 85 miles to reach the North Sea between Hartlepool and Redcar.-Geography:...

 to the Forth in the north.

In Ireland, Flann Sinna
Flann Sinna
Flann Sinna was the son of Máel Sechnaill mac Máele Ruanaid of Clann Cholmáin, a branch of the southern Uí Néill. He was King of Mide from 877 onwards and is counted as a High King of Ireland...

, married to Constantine's aunt Máel Muire, was dominant. The years around 900 represented a period of weakness among the Vikings and Norse-Gaels
Norse-Gaels
The Norse–Gaels were a people who dominated much of the Irish Sea region, including the Isle of Man, and western Scotland for a part of the Middle Ages; they were of Gaelic and Scandinavian origin and as a whole exhibited a great deal of Gaelic and Norse cultural syncretism...

 of Dublin. They are reported to have been divided between two rival leaders. In 894 one group left Dublin, perhaps settling on the Irish Sea coast of Britain between the River Mersey
River Mersey
The River Mersey is a river in North West England. It is around long, stretching from Stockport, Greater Manchester, and ending at Liverpool Bay, Merseyside. For centuries, it formed part of the ancient county divide between Lancashire and Cheshire....

 and the Firth of Clyde
Firth of Clyde
The Firth of Clyde forms a large area of coastal water, sheltered from the Atlantic Ocean by the Kintyre peninsula which encloses the outer firth in Argyll and Ayrshire, Scotland. The Kilbrannan Sound is a large arm of the Firth of Clyde, separating the Kintyre Peninsula from the Isle of Arran.At...

. The remaining Dubliners were expelled in 902 by Flann Sinna's son-in-law Cerball mac Muirecáin
Cerball mac Muirecáin
Cerball mac Muirecáin was king of Leinster. He was the son of Muirecán mac Diarmata and a member of the Uí Fáeláin, the descendants of Fáelán mac Murchado , of one of three septs of the Uí Dúnlainge of modern County Kildare in Ireland....

, and soon afterwards appeared in western and northern Britain.

To the south-west of Constantine's lands lay the kingdom of Strathclyde
Kingdom of Strathclyde
Strathclyde , originally Brythonic Ystrad Clud, was one of the early medieval kingdoms of the celtic people called the Britons in the Hen Ogledd, the Brythonic-speaking parts of what is now southern Scotland and northern England. The kingdom developed during the post-Roman period...

. This extended north into the Lennox
Lennox (district)
The district of Lennox , often known as "the Lennox", is a region of Scotland centred around the village of Lennoxtown in East Dunbartonshire, eight miles north of the centre of Glasgow. At various times in history, the district has had both a dukedom and earldom associated with it.- External...

, east to the River Forth, and south into the Southern Uplands
Southern Uplands
The Southern Uplands are the southernmost and least populous of mainland Scotland's three major geographic areas . The term is used both to describe the geographical region and to collectively denote the various ranges of hills within this region...

. In 900 it was probably ruled by King Dyfnwal.

The situation of the Gaelic kingdoms of Dál Riata
Dál Riata
Dál Riata was a Gaelic overkingdom on the western coast of Scotland with some territory on the northeast coast of Ireland...

 in western Scotland is uncertain. No kings are known by name after Áed mac Boanta. The Frankish Annales Bertiniani
Annales Bertiniani
Annales Bertiniani, or The Annals of St. Bertin, are late Carolingian, Frankish annals that were found in the monastery of St. Bertin, after which they are named. Their account is taken to cover the period 830-82, thus continuing the Royal Frankish Annals , from which, however, it has circulated...

may record the conquest of the Inner Hebrides
Inner Hebrides
The Inner Hebrides is an archipelago off the west coast of Scotland, to the south east of the Outer Hebrides. Together these two island chains form the Hebrides, which enjoy a mild oceanic climate. There are 36 inhabited islands and a further 43 uninhabited Inner Hebrides with an area greater than...

, the seaward part of Dál Riata, by Northmen in 849. In addition to these, the arrival of new groups of Vikings from northern and western Europe was still commonplace. Whether there were Viking or Norse-Gael kingdoms in the Western Isles or the Northern Isles
Northern Isles
The Northern Isles is a chain of islands off the north coast of mainland Scotland. The climate is cool and temperate and much influenced by the surrounding seas. There are two main island groups: Shetland and Orkney...

 at this time is debated.

Early life

Áed
Áed of Scotland
Áed mac Cináeda was a son of Cináed mac Ailpín . He became king of the Picts in 877 when he succeeded his brother Constantín mac Cináeda. He was nicknamed Áed of the White Flowers, the Wing-footed or the white-foot .The Chronicle of the Kings of Alba says of Áed: "Edus [Áed] held the same [i.e....

, Constantine's father, succeeded Constantine's uncle and namesake Constantine I
Constantine I of Scotland
Causantín or Constantín mac Cináeda was a king of the Picts. He is often known as Constantine I, in reference to his place in modern lists of kings of Scots, though contemporary sources described Causantín only as a Pictish king...

 in 876 but was killed in 878. Áed's short reign is glossed as being of no importance by most king lists. Although the date of his birth is nowhere recorded, Constantine II cannot have been born any later than the year after his father's death, that is 879. His name may suggest that he was born rather earlier, during the reign of his uncle Constantine I.

After Áed's death there is a two decade gap until the death of Donald II
Donald II of Scotland
Domnall mac Causantín , anglicised as Donald II was King of the Picts or King of Scotland in the late 9th century. He was the son of Constantine I...

 (Domnall mac Constantín) in 900 during which nothing is reported in the Irish annals. The entry for the reign between Áed and Donald II is corrupt in the Chronicle of the Kings of Alba, and in this case the Chronicle is at variance with every other king list. According to the Chronicle, Áed was followed by Eochaid
Eochaid of Scotland
Eochaid mac Run, known in English simply as Eochaid, may have been king of the Picts from 878 to 889. He was a son of Run, King of Strathclyde, and his mother may have been a daughter of Kenneth MacAlpin...

, a grandson of Kenneth MacAlpin, who is somehow connected with Giric
Giric of Scotland
Giric mac Dúngail was a king of the Picts or the king of Alba. The Irish annals record nothing of Giric's reign, nor do Anglo-Saxon writings add anything, and the meagre information which survives is contradictory...

, but all other lists say that Giric ruled after Áed and make great claims for him. Giric is not known to have been a kinsman of Kenneth's, although it has been suggested that he was related to him by marriage. The major changes in Pictland which began at about this time have been associated by Alex Woolf
Alex Woolf
Alex Woolf is a medieval historian based at the University of St Andrews. He specialises in the history of the British Isles and Scandinavia in the Early Middle Ages, especially in relation to the peoples of Wales and Scotland. He is author of volume two in the New Edinburgh History of Scotland,...

 and Archie Duncan
Archie Duncan
Archibald Alexander McBeth Duncan, FBA, FRHistS, FRSE is a Scottish historian.From 1962 to 1993 he was Professor of Scottish History and Literature at the University of Glasgow. On giving up his professorship, he became Clerk of Senate and Dean of Faculties, retiring from the University in 2000...

 with Giric's reign.

Woolf suggests that Constantine and his cousin Donald may have passed Giric's reign in exile in Ireland where their aunt Máel Muire was wife of two successive High Kings of Ireland, Áed Findliath and Flann Sinna
Flann Sinna
Flann Sinna was the son of Máel Sechnaill mac Máele Ruanaid of Clann Cholmáin, a branch of the southern Uí Néill. He was King of Mide from 877 onwards and is counted as a High King of Ireland...

. Giric died in 889. If he had been in exile, Constantine may have returned to Pictland where his cousin Donald II became king. Donald's reputation is suggested by the epithet
Epithet
An epithet or byname is a descriptive term accompanying or occurring in place of a name and having entered common usage. It has various shades of meaning when applied to seemingly real or fictitious people, divinities, objects, and binomial nomenclature. It is also a descriptive title...

 dasachtach, a word used of violent madmen and mad bulls, attached to him in the 11th-century writings of Flann Mainistrech
Flann Mainistrech
Flann Mainistrech was an Irish poet and historian.Flann was the son Echthigern mac Óengusso, who had been lector at the monastery of Monasterboice , in Irish Mainistir Buite, whence Flann's byname, meaning "of Monasterboice"...

, echoed by the his description in the Prophecy of Berchan
Prophecy of Berchán
The Prophecy of Berchán, is a relatively large historical poem written in the Middle Irish language. The text is preserved in the Royal Irish Academy, as MS 679 , with a few early modern copies...

as "the rough one who will think relics and psalms of little worth". Wars with the Viking kings in Britain and Ireland continued during Donald's reign and he was probably killed fighting yet more Vikings at Dunnottar in the Mearns in 900. Constantine succeeded him as king.

Vikings and bishops

The earliest event recorded in the Chronicle of the Kings of Alba in Constantine's reign is an attack by Vikings and the plundering of Dunkeld "and all Albania" in his third year. This is the first use of the word Albania, the Latin
Latin
Latin is an Italic language originally spoken in Latium and Ancient Rome. It, along with most European languages, is a descendant of the ancient Proto-Indo-European language. Although it is considered a dead language, a number of scholars and members of the Christian clergy speak it fluently, and...

 form of the Old Irish
Old Irish language
Old Irish is the name given to the oldest form of the Goidelic languages for which extensive written texts are extant. It was used from the 6th to the 10th centuries, by which time it had developed into Middle Irish....

 Alba, in the Chronicle which until then describes the lands ruled by the descendants of Cináed as Pictavia.

These Northmen may have been some of those who were driven out of Dublin in 902, but could also have been the same group who had defeated Domnall in 900. The Chronicle states that the Northmen were killed in Srath Erenn, which is confirmed by the Annals of Ulster which records the death of Ímar grandson of Ímar and many others at the hands of the men of Fortriu in 904. This Ímar was the first of the Uí Ímair
Uí Ímair
The Uí Ímair , or Dynasty of Ivar, were an enormous royal and imperial Norse dynasty who ruled Northern England, the Irish Sea region and Kingdom of Dublin, and the western coast of Scotland, including the Hebrides, from the mid 9th century, losing control of the first in the mid 10th, but the rest...

, that is the grandsons of Ímar, to be reported; three more grandsons of Ímar appear later in Constantín's reign. The Fragmentary Annals of Ireland
Fragmentary Annals of Ireland
The Fragmentary Annals of Ireland are a Middle Irish combination of chronicle from various Irish annals and narrative history. They were compiled in the kingdom of Osraige, probably in the lifetime of Donnchad mac Gilla Pátraic , king of Osraige and of king of Leinster.The Fragmentary Annals were...

contain an account of the battle, and this attributes the defeat of the Norsemen to the intercession of Saint Columba
Columba
Saint Columba —also known as Colum Cille , Colm Cille , Calum Cille and Kolban or Kolbjørn —was a Gaelic Irish missionary monk who propagated Christianity among the Picts during the Early Medieval Period...

 following fasting and prayer. An entry in the Chronicon Scotorum
Chronicon Scotorum
Chronicon Scotorum is a medieval Irish chronicle.According to Nollaig Ó Muraíle, it is "a collection of annals belonging to the 'Clonmacnoise group', covering the period from prehistoric times to 1150 but with some gaps, closely related to the 'Annals of Tigernach'...

under the year 904 may possibly contain a corrupted reference to this battle.

The next event reported by the Chronicle of the Kings of Alba is dated to 906. This records that:
King Constantine and Bishop Cellach
Cellach I of Cennrígmonaid
Cellach I is traditionally said to have been the first Bishop of the Scots , the bishopric later based at St. Andrews. He is mentioned in the historical writings of Walter Bower and Andrew of Wyntoun as a bishop of St. Andrews, but no pre-15th century sources say anything more than merely "Bishop"...

 met at the Hill of Belief near the royal city of Scone and pledged themselves that the laws and disciplines of the faith, and the laws of churches and gospels, should be kept pariter cum Scottis.
The meaning of this entry, and its significance, have been the subject of debate.

The phrase pariter cum Scottis in the Latin
Latin
Latin is an Italic language originally spoken in Latium and Ancient Rome. It, along with most European languages, is a descendant of the ancient Proto-Indo-European language. Although it is considered a dead language, a number of scholars and members of the Christian clergy speak it fluently, and...

 text of the Chronicle has been translated in several ways. William Forbes Skene
William Forbes Skene
William Forbes Skene , Scottish historian and antiquary, was the second son of Sir Walter Scott's friend, James Skene , of Rubislaw, near Aberdeen....

 and Alan Orr Anderson
Alan Orr Anderson
Alan Orr Anderson was a Scottish historian and compiler. He graduated from the University of Edinburgh. The son of Rev. John Anderson and Ann Masson, he was born in 1879...

 proposed that it should be read as "in conformity with the customs of the Gaels", relating it to the claims in the king lists that Giric liberated the church from secular oppression and adopted Irish customs. It has been read as "together with the Gaels", suggesting either public participation or the presence of Gaels from the western coasts as well as the people of the east coast. Finally, it is suggested that it was the ceremony which followed "the custom of the Gaels" and not the agreements.

The idea that this gathering agreed to uphold Irish laws governing the church has suggested that it was an important step in the gaelicisation of the lands east of Druim Alban. Others have proposed that the ceremony in some way endorsed Constantine's kingship, prefiguring later royal inaugurations at Scone. Alternatively, if Bishop Cellach was appointed by Giric, it may be that the gathering was intended to heal a rift between king and church.

Return of the Uí Ímair

Following the events at Scone, there is little of substance reported for a decade. A story in the Fragmentary Annals of Ireland, perhaps referring to events some time after 911, claims that Queen Æthelflæd, who ruled in Mercia, allied with the Irish and northern rulers against the Norsemen on the Irish sea coasts of Northumbria. The Annals of Ulster record the defeat of an Irish fleet from the kingdom of Ulaid
Ulaid
The Ulaid or Ulaidh were a people of early Ireland who gave their name to the modern province of Ulster...

 by Vikings "on the coast of England" at about this time.

In this period the Chronicle of the Kings of Alba reports the death of Cormac mac Cuilennáin
Cormac mac Cuilennáin
Cormac mac Cuilennáin was an Irish bishop and was king of Munster from 902 until his death. He was killed fighting in Leinster, probably attempting to restore the fortunes of the kings of Munster by reimposing authority over that province.Cormac was regarded as a saintly figure after his death,...

, king of Munster, in the eighth year of Constantine's reign. This is followed by an undated entry which was formerly read as "In his time Domnall [i.e. Dyfnwal], king of the [Strathclyde] Britons died, and Domnall son of Áed was elected". This was thought to record the election of a brother of Constantine named Domnall to the kingship of the Britons of Strathclyde and was seen as early evidence of the domination of Strathclyde by the kings of Alba. The entry in question is now read as "...Dynfwal... and Domnall son Áed king of Ailech died", this Domnall being a son of Áed Findliath who died on 915. Finally, the deaths of Flann Sinna and Niall Glúndub
Niall Glúndub
Niall Glúndub mac Áedo was a 10th century Irish king of the Cenél nEógain and High King of Ireland. While many Irish kin groups were members of the Uí Néill, tracing their descent from Niall of the Nine Hostages , the O'Neill dynasty took their name from Niall Glúndub rather than the earlier Niall...

 are recorded.

There are more reports of Viking fleets in the Irish Sea
Irish Sea
The Irish Sea separates the islands of Ireland and Great Britain. It is connected to the Celtic Sea in the south by St George's Channel, and to the Atlantic Ocean in the north by the North Channel. Anglesey is the largest island within the Irish Sea, followed by the Isle of Man...

 from 914 onwards. By 916 fleets under Sihtric Cáech and Ragnall
Ragnall ua Ímair
Ragnall was a Norse overlord or emperor of northern Britain, including Northumbria, the entire Irish Sea region including the Isle of Man, south to Waterford and briefly much of the Irish province of Munster, and then returning to Britain, briefly York as distinct from Northumbria at this time...

, said to be grandsons of Ímar (that is, they belonged to the same Uí Ímair
Uí Ímair
The Uí Ímair , or Dynasty of Ivar, were an enormous royal and imperial Norse dynasty who ruled Northern England, the Irish Sea region and Kingdom of Dublin, and the western coast of Scotland, including the Hebrides, from the mid 9th century, losing control of the first in the mid 10th, but the rest...

 kindred as the Ímar who was killed in 904), were very active in Ireland. Sihtric inflicted a heavy defeat on the armies of Leinster
Leinster
Leinster is one of the Provinces of Ireland situated in the east of Ireland. It comprises the ancient Kingdoms of Mide, Osraige and Leinster. Following the Norman invasion of Ireland, the historic fifths of Leinster and Mide gradually merged, mainly due to the impact of the Pale, which straddled...

 and retook Dublin in 917. The following year Ragnall appears to have returned across the Irish sea intent on establishing himself as king at York
York
York is a walled city, situated at the confluence of the Rivers Ouse and Foss in North Yorkshire, England. The city has a rich heritage and has provided the backdrop to major political events throughout much of its two millennia of existence...

. The only precisely dated event in the summer of 918 is the death of Queen Æthelflæd on 918 at Tamworth
Tamworth
Tamworth is a town and local government district in Staffordshire, England, located north-east of Birmingham city centre and north-west of London. The town takes its name from the River Tame, which flows through the town, as does the River Anker...

. Æthelflæd had been negotiating with the Northumbrians to obtain their submission, but her death put an end to this and her successor, her brother Edward the Elder
Edward the Elder
Edward the Elder was an English king. He became king in 899 upon the death of his father, Alfred the Great. His court was at Winchester, previously the capital of Wessex...

, was occupied with securing control of Mercia.

The northern part of Northumbria, and perhaps the whole kingdom, had probably been ruled by Ealdred
Ealdred I of Bernicia
Ealdred was the son of Eadwulf. He was a ruler or nobleman in Northumbria in the early tenth century.Ealdred's father, called "king of the Saxons of the North" by the Annals of Ulster, but only reeve of Bamburgh by the chronicler Æthelweard, died in 913. He may have been ruler of Northumbria...

 son of Eadulf
Eadulf I of Bernicia
Eadulf was a ruler in Northumbria in the early tenth century.The history of Northumbria in the ninth and tenth centuries is poorly recorded. English sources generally date from the twelfth century although some more nearly contemporary Irish annals report some events in Northumbria...

 since 913. Faced with Ragnall's invasion, Ealdred came north seeking assistance from Constantine. The two advanced south to face Ragnall, and this led to a battle somewhere on the banks of the River Tyne
River Tyne
The River Tyne is a river in North East England in Great Britain. It is formed by the confluence of two rivers: the North Tyne and the South Tyne. These two rivers converge at Warden Rock near Hexham in Northumberland at a place dubbed 'The Meeting of the Waters'.The North Tyne rises on the...

, probably at Corbridge
Corbridge
 Corbridge is a village in Northumberland, England, situated west of Newcastle and east of Hexham. Villages in the vicinity include Halton, Acomb, Aydon and Sandhoe.-Roman fort and town:...

 where Dere Street
Dere Street
Dere Street or Deere Street, was a Roman road between Eboracum and Veluniate, in what is now Scotland. It still exists in the form of the route of many major roads, including the A1 and A68 just north of Corbridge.Its name corresponds with the post Roman Anglo-Saxon kingdom of Deira, through...

 crosses the river. The Second Battle of Corbridge appears to have been indecisive; the Chronicle of the Kings of Alba is alone in giving Constantine the victory.

The report of the battle in the Annals of Ulster says that none of the kings or mormaer
Mormaer
The title of Mormaer designates a regional or provincial ruler in the medieval Kingdom of the Scots. In theory, although not always in practice, a Mormaer was second only to the King of Scots, and the senior of a toisech.-Origin:...

s among the men of Alba were killed. This is the first surviving use of the word mormaer; other than the knowledge that Constantine's kingdom had its own bishop or bishops and royal villas, this is the only hint to the institutions of the kingdom.

After Corbridge, Ragnall enjoyed only a short respite. In the south, Alfred's son Edward had rapidly secured control of Mercia and had a burh
Burh
A Burh is an Old English name for a fortified town or other defended site, sometimes centred upon a hill fort though always intended as a place of permanent settlement, its origin was in military defence; "it represented only a stage, though a vitally important one, in the evolution of the...

 constructed at Bakewell
Bakewell
Bakewell is a small market town in the Derbyshire Dales district of Derbyshire, England, deriving its name from 'Beadeca's Well'. It is the only town included in the Peak District National Park, and is well known for the local confection Bakewell Pudding...

 in the Peak District
Peak District
The Peak District is an upland area in central and northern England, lying mainly in northern Derbyshire, but also covering parts of Cheshire, Greater Manchester, Staffordshire, and South and West Yorkshire....

 from which his armies could easily strike north. An army from Dublin led by Ragnall's kinsman Sihtric struck at north-western Mercia in 919, but in 920 or 921 Edward met with Ragnall and other kings. The Anglo-Saxon Chronicle states that these king "chose Edward as father and lord". Among the other kings present were Constantine, Ealdred son of Eadwulf, and the king of Strathclyde, either Dyfnwal II or, more probably, Owen I. Here, again, a new term appears in the record, the Anglo-Saxon Chronicle for the first time using the word scottas, from which Scots derives, to describe the inhabitants of Constantine's kingdom in its report of these events.

Edward died in 924. His realms appear to have been divided with the West Saxons recognising Ælfweard
Ælfweard of Wessex
Ælfweard was the second son of Edward the Elder, the eldest born to his second wife Ælfflæd.-Kingship and death:The Anglo-Saxon Chronicle simply states that Ælfweard died soon after his father's death on 17 July 924 and that they were buried together at Winchester Cathedral...

 while the Mercians chose Æthelstan who had been raised at Æthelflæd's court. Ælfweard died within weeks of his father and Æthelstan was inaugurated as king of all of Edward's lands in 925.

Æthelstan

By 926 Sihtric had evidently acknowledged Æthelstan as over-king, adopting Christianity and marrying a sister of Æthelstan at Tamworth. Within the year he may have abandoned his new faith and repudiated his wife, but before Æthelstan and he could fight, Sihtric died suddenly in 927. His kinsman, perhaps brother, Gofraid
Gofraid ua Ímair
Gofraid was a Norse-Gael king of Dublin and, for a short time, king of Northumbria...

, who had remained as his deputy in Dublin, came from Ireland to take power in York, but failed. Æthelstan moved quickly, seizing much of Northumbria. In less than a decade, the kingdom of the English had become by far the greatest power in Britain and Ireland, perhaps stretching as far north as the Firth of Forth
Firth of Forth
The Firth of Forth is the estuary or firth of Scotland's River Forth, where it flows into the North Sea, between Fife to the north, and West Lothian, the City of Edinburgh and East Lothian to the south...

.

John of Worcester
John of Worcester
John of Worcester was an English monk and chronicler. He is usually held to be the author of the Chronicon ex chronicis.-Chronicon ex chronicis:...

's chronicle suggests that Æthelstan faced opposition from Constantine, from Owain of Strathclyde, and from the Welsh kings. William of Malmesbury
William of Malmesbury
William of Malmesbury was the foremost English historian of the 12th century. C. Warren Hollister so ranks him among the most talented generation of writers of history since Bede, "a gifted historical scholar and an omnivorous reader, impressively well versed in the literature of classical,...

 writes that Gofraid, together with Sihtric's young son Olaf Cuaran
Olaf Cuaran
Amlaíb mac Sitric , commonly called Amlaíb Cuarán, in Old Norse: Óláfr kváran, was a 10th century Norse-Gael who was king of Northumbria and king of Dublin. His byname, cuarán, is usually translated as "sandal"...

 fled north and received refuge from Constantine, which led to war with Æthelstan. A meeting at Eamont Bridge
Eamont Bridge
Eamont Bridge is a small village immediately to the south of Penrith, Cumbria.The village is named after the River Eamont and straddles the boundary between the ancient counties of Cumberland and Westmorland...

 on 927 was sealed by an agreement that Constantine, Owen of Strathclyde, Hywel Dda
Hywel Dda
Hywel Dda , was the well-thought-of king of Deheubarth in south-west Wales, who eventually came to rule Wales from Prestatyn to Pembroke. As a descendant of Rhodri Mawr, through his father Cadell, Hywel was a member of the Dinefwr branch of the dynasty and is also named Hywel ap Cadell...

, and Ealdred would "renounce all idolatry": that is, they would not ally with the Viking kings. William states that Æthelstan stood godfather to a son of Constantine, probably Indulf
Indulf of Scotland
Ildulb mac Causantín, anglicised as Indulf, nicknamed An Ionsaighthigh, "the Aggressor" was king of Scots from 954. He was the son of Constantine II ; his mother may have been a daughter of Earl Eadulf I of Bernicia, who was an exile in Scotland.John of Fordun and others supposed that Indulf had...

 (Ildulb mac Constantín), during the conference.

Æthelstan followed up his advances in the north by securing the recognition of the Welsh kings. For the next seven years, the record of events in the north is blank. Æthelstan's court was attended by the Welsh kings, but not by Constantine or Owen of Strathclyde. This absence of record means that Æthelstan's reasons for marching north against Constantine in 934 are unclear.

Æthelstan's campaign is reported by in brief by the Anglo-Saxon Chronicle, and later chroniclers such as John of Worcester, William of Malmesbury, Henry of Huntingdon
Henry of Huntingdon
Henry of Huntingdon , the son of a canon in the diocese of Lincoln, was a 12th century English historian, the author of a history of England, Historia anglorum, "the most important Anglo-Norman historian to emerge from the secular clergy". He served as archdeacon of Huntingdon...

, and Symeon of Durham
Symeon of Durham
Symeon of Durham was an English chronicler and a monk of Durham Priory. When William of Saint-Calais returned from his Norman exile in 1091, Symeon was probably in his company...

 add detail to that bald account. Æthelstan's army began gathering at Winchester
Winchester
Winchester is a historic cathedral city and former capital city of England. It is the county town of Hampshire, in South East England. The city lies at the heart of the wider City of Winchester, a local government district, and is located at the western end of the South Downs, along the course of...

 by 934, and reached Nottingham
Nottingham
Nottingham is a city and unitary authority in the East Midlands of England. It is located in the ceremonial county of Nottinghamshire and represents one of eight members of the English Core Cities Group...

 by . He was accompanied by many leaders, including the Welsh kings Hywel Dda, Idwal Foel, and Morgan ab Owain. From Mercia the army went north, stopping at Chester-le-Street
Chester-le-Street
Chester-le-Street is a town in County Durham, England. It has a history going back to Roman times when it was called Concangis. The town is located south of Newcastle upon Tyne and west of Sunderland on the River Wear...

, before resuming the march accompanied by a fleet of ships. Owen of Strathclyde was defeated and Symeon states that the army went as far north as Dunnottar and Fortriu, while the fleet is said to have raided Caithness
Caithness
Caithness is a registration county, lieutenancy area and historic local government area of Scotland. The name was used also for the earldom of Caithness and the Caithness constituency of the Parliament of the United Kingdom . Boundaries are not identical in all contexts, but the Caithness area is...

, by which a much larger area, including Sutherland
Sutherland
Sutherland is a registration county, lieutenancy area and historic administrative county of Scotland. It is now within the Highland local government area. In Gaelic the area is referred to according to its traditional areas: Dùthaich 'IcAoidh , Asainte , and Cataibh...

, is probably intended. It is unlikely that Constantine's personal authority extended so far north, and while the attacks may have been directed at his allies, they may also have been simple looting expeditions.

The Annals of Clonmacnoise
Annals of Clonmacnoise
The Annals of Clonmacnoise are an early 17th-century Early Modern English translation of a lost Irish chronicle, which covered events in Ireland from pre-history to A.D. 1408...

state that "the Scottish men compelled [Æthelstan] to return without any great victory", while Henry of Huntingdon claims that the English faced no opposition. A negotiated settlement may have ended matters: according to John of Worcester, a son of Constantine was given as a hostage to Æthelstan and Constantin himself accompanied the English king on his return south. He witnessed a charter with Æthelstan at Buckingham
Buckingham
Buckingham is a town situated in north Buckinghamshire, England, close to the borders of Northamptonshire and Oxfordshire. The town has a population of 11,572 ,...

 on 934 in which he is described as subregulus, that is a king acknowledging Æthelstan's overlordship. The following year, Constantine was again in England at Æthelstan's court, this time at Cirencester
Cirencester
Cirencester is a market town in east Gloucestershire, England, 93 miles west northwest of London. Cirencester lies on the River Churn, a tributary of the River Thames, and is the largest town in the Cotswold District. It is the home of the Royal Agricultural College, the oldest agricultural...

 where he appears as a witness, appearing as the first of several subject kings, followed by Owen of Strathclyde and Hywel Dda, who subscribed to the diploma. At Christmas
Christmas
Christmas or Christmas Day is an annual holiday generally celebrated on December 25 by billions of people around the world. It is a Christian feast that commemorates the birth of Jesus Christ, liturgically closing the Advent season and initiating the season of Christmastide, which lasts twelve days...

 of 935, Owen of Strathclyde was once more at Æthelstan's court along with the Welsh kings, but Constantine was not. His return to England less than two years later would be in very different circumstances.

Brunanburh and after

Following his disappearance from Æthelstan's court after 935, there is no further report of Constantine until 937. In that year, together with Owen of Strathclyde and Olaf Guthfrithson
Olaf III Guthfrithson
Amlaíb mac Gofraid , a member of the Norse-Gael Uí Ímair dynasty, was King of Dublin from 934 to 941...

 of Dublin, Constantine invaded England. The resulting battle of Brunanburh
Battle of Brunanburh
The Battle of Brunanburh was an English victory in 937 by the army of Æthelstan, King of England, and his brother Edmund over the combined armies of Olaf III Guthfrithson, the Norse-Gael King of Dublin, Constantine II, King of Scots, and Owen I, King of Strathclyde...

Dún Brunde—is reported in the Annals of Ulster as follows:
a great battle, lamentable and terrible was cruelly fought... in which fell uncounted thousands of the Northmen.  ...And on the other side, a multitude of Saxons fell; but Æthelstan, the king of the Saxons, obtained a great victory.
The battle was remembered in England a generation later as "the Great Battle". When reporting the battle, the Anglo-Saxon Chronicle abandons its usual terse style in favour of a heroic poem vaunting the great victory. In this the "hoary" Constantine, by now around 60 years of age, is said to have lost a son in the battle, a claim which the Chronicle of the Kings of Alba confirms. The Annals of Clonmacnoise give his name as Cellach. For all its fame, the site of the battle is uncertain and several sites have been advanced, with Bromborough
Bromborough
Bromborough is a large village within the Metropolitan Borough of Wirral, in Merseyside, England. It is situated on the Wirral Peninsula, to the south of Bebington and to the north of Eastham...

 on the Wirral
Wirral Peninsula
Wirral or the Wirral is a peninsula in North West England. It is bounded by three bodies of water: to the west by the River Dee, forming a boundary with Wales, to the east by the River Mersey and to the north by the Irish Sea. Both terms "Wirral" and "the Wirral" are used locally , although the...

 the most favoured location.

Brunanburh, for all that it had been a famous and bloody battle, settled nothing. On 939 Æthelstan, the "pillar of the dignity of the western world" in the words of the Annals of Ulster, died at Malmesbury
Malmesbury
Malmesbury is a market town and civil parish located in the southern Cotswolds in the county of Wiltshire, England. Historically Malmesbury was a centre for learning and home to Malmesbury Abbey...

. He was succeeded by his brother Edmund
Edmund I of England
Edmund I , called the Elder, the Deed-doer, the Just, or the Magnificent, was King of England from 939 until his death. He was a son of Edward the Elder and half-brother of Athelstan. Athelstan died on 27 October 939, and Edmund succeeded him as king.-Military threats:Shortly after his...

, then aged 18. Æthelstan's empire, seemingly made safe by the victory of Brunanburh, collapsed in little more than a year from his death when Amlaíb returned from Ireland and seized Northumbria and the Mercian Danelaw. Edmund spent the remainder of Constantín's reign rebuilding the empire.

For Constantine's last years as king there is only the meagre record of the Chronicle of the Kings of Alba. The death of Æthelstan is reported, as are two others. The first of these, in 938, is that of Dubacan
Dubacan of Angus
Dubacan of Angus is usually regarded as one of the earliest attested Mormaers. He is mentioned as Dubucan filius Indrechtaig mormair Oengusa in the Chronicle of the Kings of Alba, and it is told that he died along with his lord, Amlaib, son of Caustantín II at the Battle of Brunanburh Dubacan of...

, mormaer of Angus or son of the mormaer. Unlike the report of 918, on this occasion the title mormaer is attached to a geographical area, but it is unknown whether the Angus of 938 was in any way similar to the later mormaerdom or earldom. The second death, entered with that of Æthelstan, is that of Eochaid mac Ailpín, who may, from his name, have been a kinsman of Constantín.

Abdication and posterity

By the early 940s Constantine was an old man, perhaps more than 70 years of age. The kingdom of Alba was too new to be said to have a customary rule of succession, but Pictish and Irish precedents favoured an adult successor descended from Kenneth MacAlpin. Constantine's surviving son Indulf
Indulf of Scotland
Ildulb mac Causantín, anglicised as Indulf, nicknamed An Ionsaighthigh, "the Aggressor" was king of Scots from 954. He was the son of Constantine II ; his mother may have been a daughter of Earl Eadulf I of Bernicia, who was an exile in Scotland.John of Fordun and others supposed that Indulf had...

, probably baptised in 927, would have been too young to be a serious candidate for the kingship in the early 940s, and the obvious heir was Constantine's nephew, Malcolm I
Malcolm I of Scotland
Máel Coluim mac Domnaill was king of Scots , becoming king when his cousin Causantín mac Áeda abdicated to become a monk...

. As Malcolm was born no later than 901, by the 940s he was no longer a young man, and may have been impatient. Willingly or not—the 11th-century Prophecy of Berchán
Prophecy of Berchán
The Prophecy of Berchán, is a relatively large historical poem written in the Middle Irish language. The text is preserved in the Royal Irish Academy, as MS 679 , with a few early modern copies...

, a verse history in the form of a supposed prophecy, states that it was not a voluntary decision—Constantine abdicated in 943 and entered a monastery, leaving the kingdom to Malcolm.

Although his retirement may have been involuntary, the Life of Cathróe of Metz
Cathróe of Metz
Saint Cathróe was a monk and abbot. His life is recorded in a hagiography written soon after his death by a monk at the monastery of Saint Felix at Metz, where Cathróe was abbot...

 and the Prophecy of Berchán portray Constantine as a devout king. The monastery which Constantine retired to, and where he is said to have been abbot
Abbot
The word abbot, meaning father, is a title given to the head of a monastery in various traditions, including Christianity. The office may also be given as an honorary title to a clergyman who is not actually the head of a monastery...

, was probably that of St Andrews
St Andrews
St Andrews is a university town and former royal burgh on the east coast of Fife in Scotland. The town is named after Saint Andrew the Apostle.St Andrews has a population of 16,680, making this the fifth largest settlement in Fife....

. This had been refounded in his reign and given to the reforming Céli Dé (Culdee) movement. The Céli Dé were subsequently to be entrusted with many monasteries throughout the kingdom of Alba until replaced in the 12th century by new orders imported from France.

Seven years later the Chronicle of the Kings of Alba says:
[Malcolm I] plundered the English as far as the river Tees
River Tees
The River Tees is in Northern England. It rises on the eastern slope of Cross Fell in the North Pennines, and flows eastwards for 85 miles to reach the North Sea between Hartlepool and Redcar.-Geography:...

, and he seized a multitude of people and many herds of cattle: and the Scots called this the raid of Albidosorum, that is, Nainndisi. But others say that Constantine made this raid, asking of the king, Malcolm, that the kingship should be given to him for a week's time, so that he could visit the English. In fact, it was Malcolm who made the raid, but Constantine incited him, as I have said.
Woolf suggests that the association of Constantine with the raid is a late addition, one derived from a now-lost saga or poem.

Constantine's death in 952 is recorded by the Irish annals, who enter it among ecclesiastics. His son Indulf would become king on Malcolm's death. The last of Constantine's certain descendants to be king in Alba was a great-grandson, Constantine III
Constantine III of Scotland
Constantine, son of Cuilén , known in most modern regnal lists as Constantine III, was king of Scots from 995 to 997...

 (Constantín mac Cuiléin). Another son had died at Brunanburh, and, according to John of Worcester, Amlaíb mac Gofraid was married to a daughter of Constantine. It is possible that Constantine had other children, but like the name of his wife, or wives, this has not been recorded.

The form of kingdom which appeared in Constantine's reign continued in much the same way until the Davidian Revolution
Davidian Revolution
The Davidian Revolution is a term given by many scholars to the changes which took place in the Kingdom of Scotland during the reign of David I of Scotland...

in the 12th century. As with his ecclesiastical reforms, his political legacy was the creation of a new form of Scottish kingship that lasted for two centuries after his death.
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