Nielsen Hayden genealogy
Family: Gilbert de Clare / Isabel Marshal (F2646)
m. 9 Oct 1217Richard de Clare (1153-1217) 
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Amice of Gloucester ( -1225)
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Maud de Clare ( -1213)  |
| Hawise de Clare ( -1235) |
| William Marshal (1146-1219)
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| Isabel de Clare (1173-1220)
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| Eve Marshal ( -1242) |
| Joan Marshal ( -1234) |
| Walter Marshal ( -1245) |
| William Marshal (1190-1231) |
| Maud Marshal (1192-1248) |
| Sybil Marshal (1204-1237) |
| Gilbert de Clare (1180-1230)
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| Isabel Marshal (1200-1240)
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| Amice de Clare (1220-1284) |
| Richard de Clare (1222-1262) |
| Isabel de Clare (1226-1264) |