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