Iarmhumhain was a Kingdom in the early Christian period of Ireland in west Munster

Munster

Munster is one of the Provinces of Ireland situated in the south of Ireland. In Ancient Ireland, it was one of the fifths ruled by a "king of over-kings" . Following the Norman invasion of Ireland, the ancient kingdoms were shired into a number of counties for administrative and judicial purposes...

. Its ruling dynasty was related to the main ruling dynasty of Munster known as the Eóganachta

Eóganachta

The Eóganachta or Eoghanachta were an Irish dynasty centred around Cashel which dominated southern Ireland from the 6/7th to the 10th centuries, and following that, in a restricted form, the Kingdom of Desmond, and its offshoot Carbery, well into the 16th century...

. Its ruling branch was called the Eóganacht Locha Léin

Eóganacht Locha Léin

Eóganacht Locha Léin or Ui Caipre Luachra were a branch of the ruling Eoganachta of Munster. Their territory was in Iarmuman or West Munster. Luachair is the old name of a large district on the borders of Co Cork, Kerry and Limerick...

 or Ui Chairpri Lúachra. Their center was around Killarney

Killarney

Killarney is a town in County Kerry, southwestern Ireland. The town is located north of the MacGillicuddy Reeks, on the northeastern shore of the Lough Lein/Leane which are part of Killarney National Park. The town and its surrounding region are home to St...

, County Kerry

County Kerry

Kerry means the "people of Ciar" which was the name of the pre-Gaelic tribe who lived in part of the present county. The legendary founder of the tribe was Ciar, son of Fergus mac Róich. In Old Irish "Ciar" meant black or dark brown, and the word continues in use in modern Irish as an adjective...

 at Loch Léin. The name Iarluachair means west of the Sliabh Luachra

Sliabh Luachra

Sliabh Luachra is a region in Munster, Ireland, located around the River Blackwater, on the County Cork/County Kerry/County Limerick borderland.-Music and literature:...

 mountains.

The dynasty was established in the 5th century with the kingdom becoming semi-independent of the Munster kings at Cashel

Cashel, County Tipperary

Cashel is a town in South Tipperary in Ireland. Its population was 2936 at the 2006 census. The town gives its name to the ecclesiastical province of Cashel. Additionally, the cathedra of the Roman Catholic Archdiocese of Cashel and Emly was originally in the town prior to the English Reformation....

 in the 6th century. They ruled over smaller kingdoms in west Munster such as the Ciarraige Luachra, Corcu Duibne

Corcu Duibne

The Corcu Duibne was a notable kingdom in prehistoric and medieval County Kerry, Ireland which included the Dingle Peninsula, the Iveragh Peninsula and connecting lands...

 and Corcu Loígde

Corcu Loígde

The Corcu Loígde , meaning Gens of the Calf Goddess, also called the Síl Lugdach meic Itha, were a kingdom centered in West County Cork who descended from the proto-historical rulers of Munster, the Dáirine, of whom they were the principal royal sept...

 and at the height of their power may have ruled over areas of west Thomond

Thomond

Thomond The region of Ireland associated with the name Thomond is County Clare, County Limerick and north County Tipperary; effectively most of north Munster. The name is used by a variety of establishments and organisations located in , or associated with the region...

 including the Corcu Baiscinn and Corco Mruad and perhaps even had some sovereignty over the Uí Fidgenti

Uí Fidgenti

The Uí Fidgenti or Wood-Sprung People were an early kingdom of northern Munster, situated mostly in modern County Limerick, but extending into County Clare and County Tipperary, and possibly even County Kerry and County Cork, at maximum extents, which varied over time...

 of County Limerick

County Limerick

It is thought that humans had established themselves in the Lough Gur area of the county as early as 3000 BC, while megalithic remains found at Duntryleague date back further to 3500 BC...

 and the Eóganacht Raithlind

Eóganacht Raithlind

Eóganacht Raithlind or Uí Echach Muman are a branch of the Eóganachta, the ruling dynasty of Munster during the 5th-10th centuries. They took their name from Raithlinn or Raithleann described around the area of Bandon, in the same area...

 of County Cork

County Cork

County Cork is a county in Ireland. It is located in the South-West Region and is also part of the province of Munster. It is named after the city of Cork . Cork County Council is the local authority for the county...

.

Their power was broken in the late 8th and early 9th centuries. The transference of the overlordship of the Ciarraige Luachra to direct Cashel control in the reign of Feidlimid mac Cremthanin

Feidlimid mac Cremthanin

Fedelmid mac Crimthainn was the King of Munster between 820 and 846. He was numbered as a member of the Céli Dé, an abbot of Cork Abbey and Clonfert Abbey, and possibly a bishop...

 (died 846) signified this. The last time the title King of Iarmuman was used in the Annals of Innisfallen was 791 and in the Annals of Ulster 833. The dynasty then begins to use the title king of Loch Léin.

Kings of Iarmuman:

• Coirpre Luachra mac Cuirc
  Coirpre Luachra mac Cuirc
  Coirpre Luachra mac Cuirc was the ancestor of the Eóganacht Locha Léin branch of the Eoganachta, the ruling dynasty of Munster. This branch was also called the Ui Caipre Luachra, named after him and became the rulers of Iarmuman...
  
   (mid 5th century)
• Maine mac Coirpri
• Dauí Iarlaithe mac Maithni
  Dauí Iarlaithe mac Maithni
  Dauí Iarlaithe mac Maithni was a King of Iarmuman from the Eóganacht Locha Léin branch of the Eoganachta, the ruling dynasty of Munster. He was the grandson of the founder of this branch of the dynasty, Coirpre Luachra mac Cuirc...
  
   (circa 500)
• ....
• Crimthann mac Cobthaig (6th century)
• Áed Bennán mac Crimthainn
  Áed Bennán mac Crimthainn
  Áed Bennán mac Crimthainn was a possible King of Munster from the Eóganacht Locha Léin branch of the Eoganachta. He was definitely king of West Munster or Iarmuman. He was the great grandson of Dauí Iarlaithe mac Maithni also a possible king of Munster from this branchThere is some dispute in the...
  
   (died 618)
• Áed Dammán mac Crimthainn (died 633)
• Máel Dúin mac Áedo Bennán
  Máel Dúin mac Áedo Bennán
  Máel Dúin mac Áedo Bennán was a King of Iarmuman from the Eóganacht Locha Léin branch of the Eoganachta. He was the son of Áed Bennán mac Crimthainn , who may have been King of all Munster...
  
   (died 661)
• Congal mac Máele Dúin
  Congal mac Máele Dúin
  Congal mac Máele Dúin was a King of Iarmuman from the Eóganacht Locha Léin branch of the Eoganachta, the ruling dynasty of Munster. He was the son of Máel Dúin mac Áedo Bennán , previous king of Iarmuman and grandson of Áed Bennán mac Crimthainn , who may have been King of all Munster...
  
   (died 690)
• Cú Dínaisc mac Foirchellaig (died 717)
• Áed mac Conaing (died 734)
• Cairpre mac Con Dínaisc (died 747)
• Máel Dúin mac Áedo
  Máel Dúin mac Áedo
  Máel Dúin mac Áedo was a possible King of Munster from the Eóganacht Locha Léin branch of the Eóganachta. He was the son of Áed Bennán mac Conaing , a king of Iarmuman or West Munster and great great grandson of Áed Bennán mac Crimthainn who may have been King of all Munster.The Eóganacht Locha...
  
  (died 786)
• Cú Chongelt mac Cairpri (died 791)
• Áed Allán mac Coirpri (died 803)
• Cobthach mac Máele Dúin (died 833)
• Máel Crón mac Cobthaig (died 838)