Clan Muircheartaigh Uí Conchobhair
The 'Clan Muircheartaigh Uí Conchobhair (aka Clan Murtagh O'Connors) were descendants of Irish High-King Toirdelbach Ua Conchobair, via his son, Muircheartach Muimhneach (d.1210). They have been defined by Katherine Simms as:
... the earliest, most aristocratic and best documented example of increasing nomadism in the northern half of Ireland in the late middle ages. ... In spite of the fact that they were a very numerous branch of the O'Conor family, who supplied five kings to the throne of Connacht, they seem to have vanished away in the early fifteenth century, never to be heard of again.
Clan Muircheartaigh Kings of Connacht
- Cathal mac Conchobair Ruadh Ua Conchobair, reigned 1280-1288
- Maghnus mac Conchobair Ruadh Ua Conchobair, reigned 1288-1293
- Aodh Breifnech (i.e., of Breifne), reigned 1309-1310
- Ruaidrí, reigned 1315-1316
- Aodh, reigned 1342-1343, Died 1350
The family held an overlord position in south Mayo, possibly conterminous with the Diocese of Mayo, prior to the Norman occupation of Connacht by Richard Mór de Burgh. Thereafter they attempted with short periods of success to contest for the title of the rump-Kingdom of Connacht in the King's Cantreds with their cousins, the descendants of Cathal Crobhdearg Ua Conchobair. From the 1290s their main base of activity was in West Breifne. After the 1360s their standing was greatly reduced and they returned to County Roscommon as supporters of the O'Conor Roe, gradually fading into obscurity.
Family tree (simplified)
- Kg. = King of Connacht
Tairrdelbach, King of Connacht & Ard Rí na hÉireann, 1088-1156. | ______________________________|____________________________________________ | | | | | | Ruaidrí Muirchertach Muimnech Cathal Crobhdearg, 1153-1224, c.1115-1198 Tainiste of Connacht Kg. 1202-24. King of Connacht, d.1210 Ancestor of Ó Conchubhair Ruadh & Ó Conchubhair Donn & Ard Rí na hÉireann | | Conor Ruad, d.1245 ______________________________|____________________________________________ | | | | Cathal Ruad Maghnus Kg. Conn. 1280-88; 1293 Kg. Conn 1288-1293 | |________________________________________________________ | | | | | | Conor Ruad Aodh Breifnech Ruaidri claimant. 1296 Kg. Conn. 1309-10 Kg. Conn. 1315-16 | ____________________________|____________________________ | | | Aodh Cathal Ruaidri Kg. Conn. 1342-43 Tainiste Tainiste d.1350 d.1366 d.1380
- A Lost Tribe - The Clan Murtagh O'Conors, Katherine Simms, pp. 1–22, Journal of the Galway Archaeological and Historical Society, volume 53, 2001