William De Burgh
- 1205(
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- 1 William De Burgh [1] d. 1205
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- 2 Richard The Great (Lord of Connacht) De Burgh [1.1] d. 1243
- Giles De Lacy d. Yes, date unknown
- 3 Walter (2nd Earl of Ulster) De Burgh [1.1.1] d. 28 Jul 1271
- + Egidia De Lacy d. Yes, date unknown
- Aveline Fitzjohn d. Yes, date unknown
- 4 Richard The Red (3rd Earl of Ulster) De Burgh [1.1.1.1] b. 1262 d. 29 Jul 1326
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- 4 Jill (of Ulster) De Burgh [1.1.1.2] d. Yes, date unknown
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- 4 Richard The Red (3rd Earl of Ulster) De Burgh [1.1.1.1]
- + Egidia De Lacy d. Yes, date unknown
- 3 Richard (Lord Connacht) De Burgh [1.1.2] d. 1248
- 3 William (Sir) of De Burgh [1.1.3] d. Yes, date unknown
- 3 Margery De Burgh [1.1.4] d. Yes, date unknown
- Theobald 3rd Le Botiller d. 1248
- 4 Theobald 1st Lord De Botiller [1.1.4.1] d. 26 Sep 1285
[ =>]
- 4 Theobald 1st Lord De Botiller [1.1.4.1]
- 3 Walter (2nd Earl of Ulster) De Burgh [1.1.1]
- + Una (Or Agnes of Connaught d. Yes, date unknown
- 2 Hubert (Bishop of Limerick) De Burgh [1.2] d. Yes, date unknown
- 2 Richard The Younger De Burgh [1.3] d. Yes, date unknown
- 2 Richard The Great (Lord of Connacht) De Burgh [1.1]