Nielsen Hayden genealogy
Family: Robert fitz Hamon / Sibyl de Montgomery (F1187)
m. Between 1087 and 1090
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Roger de Montgomery ( -1094)
|
Mabel de Bellême ( -1077)
|
Maud de Montgomery ( -1082)  |
| Roger "the Poitevin" de Montgomery ( -1123) |
| Robert II de Bellême (1057-1130) |
| Robert fitz Hamon ( -1107) |
| Sibyl de Montgomery ( -1108)
|
| Mabel fitz Robert ( -1157) |