Nielsen Hayden genealogy
Family: John fitz Geoffrey / Isabel le Bigod (F3969)
m. Bef 12 Apr 1234Geoffrey fitz Peter ( -1213) 
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Aveline de Clare (1172-1225)
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Hawise fitz Geoffrey ( -1242)  |
| Hugh II le Bigod ( -1225)
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| Maud Marshal (1192-1248)
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| Ralph le Bigod (1209-1259) |
| Hugh III le Bigod (1215-1266) |
| John fitz Geoffrey (1205-1258)
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| Maud fitz John ( -1301) |
| Avelina fitz John ( -1274) |
| Joan fitz John ( -1303) |