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Male Muircetrach O'Brien King of Munster Click to view Muircetrach O'Brien King of Munster in the family tree

Muircetrach's father was Toirrdelbach O'Brien King of Munster & Ireland and his mother was Dirborgaill ingen Taidg of Ossory.  His paternal grandfather was Teige (Terrence) O'Brien; his maternal grandfather was Tadg macGilla Pátraic of Ossory. He had two half-brothers named Finn O'CaellaideKing of and Murnough Murcertach.  He died in 1119.


Muircetrach's family with Dubichobhiegh Of Ossory

They had a daughter named Lafracoth.

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