Muirchertach Ua Briain High King of Ireland (1050–1119) Parents Dearbforgail, of Ossory Toirdelbach Ua Briain Children Domnall Gerrlámhach Lafracoth O'Brien Bjaðmunjo Mýrjartaksdóttir Mahon O'Brien, Prince of Corkobaskin Siblings Diarmait Ua Briain
