Nielsen Hayden genealogy
Family: William Fitzwilliam / Elizabeth Chaworth (F10247)
John Fitzwilliam (1397-1421) 
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Margaret Clarell ( -1466)
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| Thomas Chaworth ( -1459)
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| Isabel Aylesbury (1401-1447)
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| William Fitzwilliam (1416-1474)
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Isabel Fitzwilliam ( -1506)  |