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Male Murcertac O'NEILL Click to view Murcertac O'NEILL in the family tree

Murcertac's father was Donal IV  Monarch De Ireland UNKNOWN and his mother was More de  OSSORY UNKNOWN.  His paternal grandparents were Murcertac King de Tyrone & Ailech UNKNOWN and Flanna DE Ireland UNKNOWN; his maternal grandparents were Donchad  Prince de  OSSORY UNKNOWN and Aife de  DEISI MUMAN UNKNOWN.  He was an only child.  He died about 1000.


Murcertac's family

He had a biological son named Flaithbertach.