Nielsen Hayden genealogy
William de Montagu
- Abt 1217(
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- 1 William de Montagu [1] d. Abt Jun 1217
- Isabel d. Aft Jun 1217
- 2 Drew de Montagu [1.1] d. Bef 1217
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- 3 William de Montagu [1.1.1] b. Abt 1213 d. Bef 23 Sep 1270
- Bertha d. Aft 1259
- 4 Simon de Montagu [1.1.1.1] b. Aft 1250 d. 26 Sep 1316
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- 4 Simon de Montagu [1.1.1.1]
- 3 William de Montagu [1.1.1]
- 2 Drew de Montagu [1.1]