Background
His mother"s identity is uncertain - Tairrdelbach had six wives - but his full brothers were Tadhg Alainn (died 1143 or 1144) and Abbot Máel Ísa of Roscommon (died 1223).
Archbishop of Armagh Archbishop of Connacht
His mother"s identity is uncertain - Tairrdelbach had six wives - but his full brothers were Tadhg Alainn (died 1143 or 1144) and Abbot Máel Ísa of Roscommon (died 1223).
Maghnus Ua Conchobair, Prince of Connacht, died 1181. The battle occurred "on the Saturday before Whitsuntide", "Sixteen of the sons of the lords and chieftains of Connacht were slain by the Kinel Connell, as well as many others, both of the nobles and the plebeians". As a result of this battle, "They (the Cenel Conaill) held the Connacians under subjection for a long time." Among the notable dead were two sons of Aed Ua Conchobair, Aed mac Conchobair Ua Cellaigh, Gilla Crist Ua Roduibh, Eachmarchach Ua Murray, a son of Mortough Ua Conchobair, "three of the O"Mulrenins.
The two Mac Gillaboys.
And Hugh, son of Hugh, who was the son of Roderic, together with many others of the nobility". Brian Luighneach"s son, Donogh, was also killed.
Maghnus"s descendants were known as the Clann Maghnusa (Liquefied Natural Gas, pp 398–99), which Jaski identifies as Mac Magnusa of Tir Tuathail (EIKS, p 316). This would place them in County Roscommon.
Magnus had the following known offspring:
Muircheartach - alive 1230
Another son, son Conchobair, was killed in 1279
Domnall - A great-grandson, Teige, a man distinguished for his hospitality, was slain in 1307) by Cathal, the son of Donnell, son of Teige O"Conor.
Riocaird - In Leabhar na nGenealach, Dubhaltach MacFhirbhisigh states that a clann Riocaird is from Riocard son Maghnus son Toirdhealbhach Mor. From him it was first named, id est (that is), it was called Clann Riocaird, for it was by (?) and from that Clann Riocard that Meic Cathail Leithdheirg came.
Riocaird does not appear in the annals.
