*Muirchearteach O'Brien
born about 1046
died 1119

father:
*Toirdelbach Mor O'Brien
born 1009
died 14 July 1086

mother:
*Dearbforgail of Ossory
(end of information)

siblings:
*Diarmait MacToirdelbach O'Brien King of Munster born 1060 Munster, Ireland died 1118

spouse:
*Dubhehoblaigh of Ossory
(end of information)

children:
*Lafracoth O'Brien
born about 1076

biographical and/or anecdotal:

notes or source:
LDS
ancestry.com