Nielsen Hayden genealogy
Family: Raoul I de Fougères / Avice fitz Richard (F10626)
m. Bef 1086Richard fitz Gilbert (1033-1088) 
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Rohese Giffard ( -1114)
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Robert fitz Richard ( -1135)  |
| Rohese fitz Gilbert de Clare (1055-1121) |
| Gilbert fitz Richard de Clare (1060-1117) |
| Avice fitz Richard ( -1113)
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| Raoul I de Fougères ( -1124)
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| Henri de Fougères ( -1150) |