Nielsen Hayden genealogy
Family: John fitz Marmaduke / Isabel de Brus (F2003)
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Robert de Brus (1220-1295)
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Isabel de Clare (1226-1264)
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Robert de Brus (1243-1304)  |
| John fitz Marmaduke ( -1311)
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| Mary Fitz Marmaduke ( -1319) |