Nielsen Hayden genealogy
Family: William fitz Alan / Isabel de Say (F412)
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Alan fitz Flaald ( -1115)
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Aveline de Hesdin ( -1149)
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Walter fitz Alan (1110-1177)  |
| Elias de Say ( -1165)
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| William fitz Alan ( -1160)
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| Isabel de Say (1132- )
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| William Fitz Alan (1154-1210) |