Nielsen Hayden genealogy
Family: John de Muscegros / Cecily Avenal (F11133)
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Robert de Muscegros ( -1254)
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Hawise Malet ( -1287)
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| William Avenal (1202-1236)
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| John de Muscegros (1232-1275)
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| Cecily Avenal ( -1301)
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Robert de Muscegros (1252-1280)  |