Nielsen Hayden genealogy
Family: Fulk V Fitzwarine / Margaret de la Pole (F4314)
m. Bef 25 Feb 1277Fulk IV Fitzwarine (1208-1264) 
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Constance de Toeni (1233-1266)
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| Gruffydd ap Gwenwynwyn ( -1286)
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| Hawise le Strange ( -1310)
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Owen de la Pole ( -1293)  |
| Margaret de la Pole ( -1336)
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| Fulk V Fitzwarine (1251-1315)
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| Hawise Fitzwarine ( -1303) |