Derbforgaill of Osraige
Generation: 1
Generation: 2
Generation: 3
Generation: 4
1. Derbforgaill of Osraige Derbforgaill — Toirdelbach Ua Briain. Toirdelbach (son of Tadc mac Briain and Mór) was born 1009; died 14 Jul 1086. [Group Sheet]
Children:
- 2. Muirchertach Ua Briain was born Abt 1050; died Abt 10 Mar 1118/19.
Generation: 2
2. Muirchertach Ua Briain (1.Derbforgaill1) was born Abt 1050; died Abt 10 Mar 1118/19. Muirchertach — . Unknown [Group Sheet]
Children:
- 3. Lafracota
- 4. Mor Ua Briain died 1137.
Generation: 3
3. Lafracota (2.Muirchertach2, 1.Derbforgaill1) Lafracota married Arnulf de Montgomery Bef 1103. Arnulf (son of Roger of Montgomery, 1st Earl of Shrewsbury and Mabel de Bellême) was born Abt 1068; died Abt 1120. [Group Sheet]
Children:
4. Mor Ua Briain (2.Muirchertach2, 1.Derbforgaill1) died 1137. Mor — Murchad Ua Maeleachlainn, King of Meath. [Group Sheet]
Generation: 4
5. Alice de Montgomery (3.Lafracota3, 2.Muirchertach2, 1.Derbforgaill1) Alice — Maurice FitzGerald, Lord of Lanstephan. Maurice (son of Gerald de Windsor and Nest ferch Rhys, ap Tewdwr) was born Abt 1105; died Sep 1177. [Group Sheet]
Children:
- 6. Gerald FitzMaurice, 1st Lord of Offaly was born Abt 1150; died 15 Jan 1203/04, Wales.