Ancestry Research in Ireland

| 1. | Derb Forgaill ingen Lethlobair Family/Spouse: Murtaugh O'Brien, High King of Ireland. Murtaugh (son of Turlough O'Brien, High King of Ireland and Derbforgaill of Osraige) was born in Abt. 1050; died in Abt. 10 Mar 1119. [Group Sheet] [Family Chart]
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| 2. | Mathgamain O'Brien |
| 3. | Domnall O'Brien, King of Dublin |
| 4. | Bjaðmunjo O'Brien Bjaðmunjo married Sigurd Magnusson, King of Norway in 1102. Sigurd (son of Magnús Óláfsson, King of Norway) was born in Abt. 1090. [Group Sheet] [Family Chart] |
| 5. | Lafracoth O'Brien Family/Spouse: Arnulf de Montgomery. [Group Sheet] [Family Chart] |
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