Nielsen Hayden genealogy
Family: William Mainwaring / Elizabeth Leycester (F1084)
m. Bef 1355William Mainwaring ( -1338) 
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| Nicholas Leycester ( -1349)
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Mary Mobberley ( -1405)
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| William Mainwaring (1334-1364)
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| Elizabeth Leycester ( -1404)
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 | Randall Mainwaring ( -1456)  |