What is Muirchertach Ua Briain?
[[File:Muirchertach Ua Briain.jpg|thumb|Fanciful depiction of Muirchertach Ua Briain, High King of Ireland (died 1119).]] '''Muircheartach Ua Briain''' (anglicised as '''Murtaugh O'Brien'''; c. 1050 – c. 10 March 1119), son of [[Toirdelbach Ua Briain]] and great-grandson of [[Brian Boru]], was [[Lord of Ireland|King of Munster]] and later self-declared [[Lord of Ireland|High King of Ireland]]. [[Category:1050s births]] [[Category:1119 deaths]] [[Category:Kings and Queens of Ireland]]