Nielsen Hayden genealogy
Robert de Beaumont
Abt 1142 - Abt 1207 (~ 65 years)(
= Descendancy chart to this point, 
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- 1 Robert de Beaumont [1] b. Abt 1142 d. Abt 1207
- Maud of Cornwall d. Between 1220 and 1221
- 2 Mabel de Meulan [1.1] d. Aft 1 May 1204
- William de Revières b. 1155 d. 10 Sep 1217
- 3 Mary de Revières [1.1.1] d. Aft 12 Nov 1242
- Robert de Courtenay b. Abt 1183 d. 26 Jul 1242
- 4 Hawise de Courtenay [1.1.1.1] d. Bef 8 Apr 1269
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- 4 John de Courtenay [1.1.1.2] d. 3 May 1274
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- 4 Hawise de Courtenay [1.1.1.1]
- 3 Baldwin de Revières [1.1.2] b. Aft 28 Apr 1200 d. 1 Sep 1216
- Margaret d. Bef 29 Sep 1252
- 4 Baldwin de Revières [1.1.2.1] d. 15 Feb 1245
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- 4 Baldwin de Revières [1.1.2.1]
- 3 Mary de Revières [1.1.1]
- 2 Mabel de Meulan [1.1]