Nielsen Hayden genealogy
Family: Edmund Knyvet / Eleanor Tyrrell (F11254)
William Knyvet (1440-1515) 
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Alice Grey ( -1474)
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| William Tyrrell ( -1462)
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James Tyrrell (1445-1502)  |
| Edmund Knyvet ( -1504)
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| Eleanor Tyrrell ( -1514)
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| Edmund Knyvet (1490-1539) |