Nielsen Hayden genealogy
Family: John de Grey / Avice Marmion (F9565)
m. Bef 1341
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John de Grey (1272-1311)
|
Margaret de Odingsells (1277-1330)
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Joan de Grey ( -1338)  |
| John Marmion (1292-1335)
|
| Maud de Furnival ( -1348)
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| Joan Marmion ( -1346) |
| John de Grey (1300-1359)
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| Avice Marmion ( -1379)
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| Maud de Grey ( -1391) |
| Robert de Grey ( -1367) |