Diarmaid O'Brien, King of Munster

DIARMAIT (-Corcach Mór Muman 1118). The Annals of Inisfallen record that "Diarmait Ua Briain brought a fleet to Wales and took great spoil therefrom” in 1080[939]. The Annals of Inisfallen record that, on the death of Tordelbach in 1086, Munster "was divided in three between [his] three sons…Tadc, Muirchertach and Diarmait”, but adding that Diarmait “was banished from Mumu” in 1086 after the death of his brother Tadhg, when his brother Muirchertach “took the kingship”[940]. The Annals of Inisfallen record that "Diarmait Ua Briain was banished to Ulaid” in 1092[941]. The Annals of Tigernach (Continuation) record that “Diarmait Húa Bríáin” seized the kingdom of Munster in 1114 when “Muirchertach Húa Bríáin” fell ill[942]. The Annals of Inisfallen record that "Diarmait Ua Briain took the kingship of Mumu and banished Muirchertach from Luimnech to Cell Da Lua” in 1114, but in a later passage records that “Muirchertach came to Luimnech and Diarmait was imprisoned by him” in 1115[943]. The Annals of Inisfallen record that "Diarmait Ua Briain turned against Muirchertach Ua Briain” in 1116 and that “Muirchertach Ua Briain went to Les Mór and assumed the pilgrim´s staff”[944]. King of Munster 1116. The Annals of Tigernach (Continuation) record that “Diarmuit Húa Bríáin king of the southern half of Ireland [Lethe Mogha]” died in 1118[945]. The Annals of Inisfallen record that "Diarmait Ua Briain died in Corcach Mór Muman” in 1118[946]. m ---.

The name of Diarmait´s wife is not known. Diarmait & his wife had three children:

a) CONCHOBAR (-1142). King of Munster.

b) TORDELBACH (-1167). King of Munster.

c) TADHG (-1167). King of Thomond 1122.