Demetrius of Montferrat
Encyclopedia
Montferrat
Montferrat is part of the region of Piedmont in Northern Italy. It comprises roughly the modern provinces of Alessandria and Asti. Montferrat is one of the most important wine districts of Italy...
, (Thessalonica 1205 - Amalfi
Amalfi
Amalfi is a town and comune in the province of Salerno, in the region of Campania, Italy, on the Gulf of Salerno, c. 35 km southeast of Naples. It lies at the mouth of a deep ravine, at the foot of Monte Cerreto , surrounded by dramatic cliffs and coastal scenery...
1230), king of Thessalonica
Kingdom of Thessalonica
The Kingdom of Thessalonica was a short-lived Crusader State founded after the Fourth Crusade over the conquered Byzantine lands.- Background :...
from 1207 to 1224.
Demetrius was the son of Marquis Boniface of Montferrat
Boniface of Montferrat
Boniface of Montferrat was Marquess of Montferrat and the leader of the Fourth Crusade. He was the third son of William V of Montferrat and Judith of Babenberg, born after his father's return from the Second Crusade...
by Margaret of Hungary
Margaret of Hungary
Margaret of Hungary was the Empress consort of Isaac II Angelos, Byzantine Emperor.- Family :Margaret was the eldest daughter of Béla III of Hungary and his first wife Agnes of Antioch. She was a younger sister of Emeric, King of Hungary. Her younger siblings were Andrew II of Hungary and...
, the widow of Emperor
Byzantine Empire
The Byzantine Empire was the Eastern Roman Empire during the periods of Late Antiquity and the Middle Ages, centred on the capital of Constantinople. Known simply as the Roman Empire or Romania to its inhabitants and neighbours, the Empire was the direct continuation of the Ancient Roman State...
Isaac II Angelos
Isaac II Angelos
Isaac II Angelos was Byzantine emperor from 1185 to 1195, and again from 1203 to 1204....
. In the aftermath of the Fourth Crusade
Fourth Crusade
The Fourth Crusade was originally intended to conquer Muslim-controlled Jerusalem by means of an invasion through Egypt. Instead, in April 1204, the Crusaders of Western Europe invaded and conquered the Christian city of Constantinople, capital of the Eastern Roman Empire...
Boniface had secured for himself the kingdom of Thessalonica
Medieval Thessalonica
Thessalonica in the Middle Ages may refer to Thessalonica city,, Thessalonica or to the Latin Kingdom of Thessalonica.-Sack of Thessalonica:...
in the division of the spoils. Marrying the former Byzantine empress, he found it easier to attract support from the members of the Byzantine aristocracy. When Boniface's son was born in 1205, he was named after Saint Demetrius, the patron saint of Thessalonica.
Boniface was killed in a battle against the Bulgaria
Second Bulgarian Empire
The Second Bulgarian Empire was a medieval Bulgarian state which existed between 1185 and 1396 . A successor of the First Bulgarian Empire, it reached the peak of its power under Kaloyan and Ivan Asen II before gradually being conquered by the Ottomans in the late 14th-early 15th century...
ns in 1207, and Kaloyan of Bulgaria
Kaloyan of Bulgaria
Kaloyan the Romanslayer , Ivan II , ruled as emperor of Bulgaria 1197-1207. He is the third and youngest brother of Peter IV and Ivan Asen I who managed to restore the Bulgarian Empire...
promptly besieged Thessalonica. The siege ended with Kaloyan's murder, but Demetrius' rule was not secure. The most influential magnates of the kingdom conspired against him, plotting to replace the infant ruler with his half-brother, Marquis William VI of Montferrat. The Latin Emperor
Latin Empire
The Latin Empire or Latin Empire of Constantinople is the name given by historians to the feudal Crusader state founded by the leaders of the Fourth Crusade on lands captured from the Byzantine Empire. It was established after the capture of Constantinople in 1204 and lasted until 1261...
Henry of Flanders
Henry of Flanders
Henry was the second emperor of the Latin Empire of Constantinople. He was a younger son of Baldwin V, Count of Hainaut , and Margaret I of Flanders, sister of Philip of Alsace, count of Flanders....
determined to stem this movement and advanced on Thessalonica in December 1208. The barons, led by Count Umberto II of Biandrate, shut the gates of the city before the emperor and issued several unreasonable demands. The emperor pretended to accept Biandrate's terms (provided that Margaret accepted them) long enough to gain entrance into the city. Margaret was instructed to overrule the terms and Henry crowned young Demetrius king on January 6, 1209 and extracted oaths of homage from the Lombard barons. The emperor's actions were confirmed by Pope Innocent III
Pope Innocent III
Pope Innocent III was Pope from 8 January 1198 until his death. His birth name was Lotario dei Conti di Segni, sometimes anglicised to Lothar of Segni....
.
The rights of the young king were still threatened by Biandrate's Lombard garrisons of important fortresses like Serres
Serres, Greece
Sérres is a city in Macedonia, Greece. It is situated in a fertile plain at an elevation of about 70 m, some 24 km northeast of the Strymon river and 69 km north-east of the Macedonian capital, Thessaloniki. The Rhodope Mountains rise to the north and east of the city...
and Kavala
Kavala
Kavala , is the second largest city in northern Greece, the principal seaport of eastern Macedonia and the capital of Kavala peripheral unit. It is situated on the Bay of Kavala, across from the island of Thasos...
. Henry took Serres but Kavala held out. Hoping to reach a reconciliation, the emperor summoned the nobility of the Kingdom of Thessalonica to a parliament at Ravennika, but many lords did not submit. After further military action, Henry obtained the submission of Biandrate and the remaining Lombard lords. He defeated the Epirote
Despotate of Epirus
The Despotate or Principality of Epirus was one of the Byzantine Greek successor states of the Byzantine Empire that emerged in the aftermath of the Fourth Crusade in 1204. It claimed to be the legitimate successor of the Byzantine Empire, along with the Empire of Nicaea, and the Empire of Trebizond...
attack on Thessalonica in 1210 and left his younger brother Eustace as regent for King Demetrius. The situation changed again on Henry's death in 1216.
The new Latin Emperor, Peter of Courtenay, was won over by the Lombard lords and invested William of Montferrat with the kingdom before leaving Italy
Italian Peninsula
The Italian Peninsula or Apennine Peninsula is one of the three large peninsulas of Southern Europe , spanning from the Po Valley in the north to the central Mediterranean Sea in the south. The peninsula's shape gives it the nickname Lo Stivale...
. The Queen Mother Margaret fled to Hungary
Kingdom of Hungary
The Kingdom of Hungary comprised present-day Hungary, Slovakia and Croatia , Transylvania , Carpatho Ruthenia , Vojvodina , Burgenland , and other smaller territories surrounding present-day Hungary's borders...
, but Demetrius apparently remained in place, while the Emperor Peter was captured and eventually executed by Theodore Komnenos Doukas
Theodore Komnenos Doukas
Theodore Komnenos Doukas was ruler of Epirus from 1215 to 1230 and of Thessalonica from 1224 to 1230.-Life:...
in Epirus.
The ruler of Epirus, Theodore Komnenos Doukas
Theodore Komnenos Doukas
Theodore Komnenos Doukas was ruler of Epirus from 1215 to 1230 and of Thessalonica from 1224 to 1230.-Life:...
, exploited the dissension among the nobility in Thessalonica to gradually conquer the kingdom's fortified towns one after another. Although William of Montferrat proved unwilling to dispossess his half-brother, he agreed to lead a crusade to the relief of Thessalonica in 1222, and prepared to set out, sending ahead Umberto of Biandrate. Before the main force of this crusade reached Thessalonica, however, Theodore forced the surrender of the city in December 1224. Together with the Latin archbishop, King Demetrius fled to the court of Emperor Frederick II
Frederick II, Holy Roman Emperor
Frederick II , was one of the most powerful Holy Roman Emperors of the Middle Ages and head of the House of Hohenstaufen. His political and cultural ambitions, based in Sicily and stretching through Italy to Germany, and even to Jerusalem, were enormous...
in Italy. He participated in Frederick's crusade to the Levant
Levant
The Levant or ) is the geographic region and culture zone of the "eastern Mediterranean littoral between Anatolia and Egypt" . The Levant includes most of modern Lebanon, Syria, Jordan, Israel, the Palestinian territories, and sometimes parts of Turkey and Iraq, and corresponds roughly to the...
, and died in 1230 at Amalfi, after ceding his rights to Thessalonica to Frederick II.