Nielsen Hayden genealogy
Family: John de Greystoke / Elizabeth Ferrers (F13250)
m. 28 Oct 1407Ralph de Greystoke (1353-1418) 
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Katherine Clifford ( -1413)
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Maud Greystoke ( -1438)  |
| Robert Ferrers (1372-1396)
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| Joan Beaufort (1379-1440)
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| Mary Ferrers (1394-1458) |
| John de Greystoke (1390-1436)
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| Elizabeth Ferrers (1393-1434)
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| Ralph Greystoke (1414-1487) |
| Anne Greystoke (1417-1477) |