Nielsen Hayden genealogy
William de Burgh

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- 1 William de Burgh [1] d. 1205
(Unknown)
- 2 Richard de Burgh [1.1]
b. Abt 1193 d. 1242
Gille de Lacy d. 1242
- 3 (Unknown) de Burgh [1.1.1]
Gerald de Prendergast d. Aug 1251
- 4 Maud de Prendergast [1.1.1.1]
b. Abt 1242 d. Bef 1276 [ =>]
- 4 Maud de Prendergast [1.1.1.1]
- 3 Margery de Burgh [1.1.2]
d. Aft 1 Mar 1253
Thebaud le Boteler b. Abt 1223 d. Bef 3 Aug 1248
- 4 Thebaud le Boteler [1.1.2.1]
b. Abt 1242 d. 26 Sep 1285 [ =>]
- 4 Thebaud le Boteler [1.1.2.1]
- 3 Walter de Burgh [1.1.3]
b. Abt 1229 d. 28 Jul 1271
Avelina fitz John d. Abt 20 May 1274
- 4 Giles de Burgh [1.1.3.1]
[ =>]
- 4 Richard de Burgh [1.1.3.2]
b. Abt 1259 d. 29 Jul 1326 [ =>]
- 4 Giles de Burgh [1.1.3.1]
- 3 (Unknown) de Burgh [1.1.1]
- 2 Richard de Burgh [1.1]