Muircetrach O'Brien 
Muircetrach was born about 1055 in Ireland. Muircetrach's father was Toirrdelbach O'Brien and his mother is Diborgaill Ingen Taidg of Ossory. His paternal grandfather was Teige O'Brien and his paternal grandmother is More O'Mulley; his maternal grandfather is Taidg MacGilla Patraic of Ossory. He had a brother named Diarmat MacToirrdelbaig. He was the older of the two children. He died in 1119 in Lismore, Waterford, Ireland.General Notes
REFN: 3404AN
REFN: P3405
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Ancestor Pedigree Chart
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*There are earlier generations for the ancestor(s) indicated. See their page(s) for details (click name)
- b.~ 0910 in Ireland
- b.~ 0940 d.0951 in Thomond
- b.0940 in Munster, Ireland d.23 Apr 1014 in Clontarf, Ireland
- b.~ 0910 in Ireland d. in West Connacht, Ireland
- b.~ 0940 in Ireland
- b.> 0965 in Ireland d.1023
- b.~ 0880 in Leinster, Ireland d.0923
- b.< 0923 in Ireland d.0972
- b.~ 0945 in Ireland d.1030 in Ireland
- b.~ 0925 in Connaught, Ireland
- b.~ 1010 in Ireland d.14 Jul 1086
- b.~ 0980 in Ireland
- b.~ 1055 in Ireland d.1119 in Lismore, Waterford, Ireland
- b.0980 in Ossory, Ireland
- b.1018 in Ossory, Ireland
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Children
Lafracoth O'Brien
Lafracoth was born about 1078 in Munster, Ireland. She died in Pembrokeshire, Wales.
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