Nielsen Hayden genealogy
Family: William Mainwaring / Margaret Warren (F1294)
Randall Mainwaring ( -1456) 
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Margery de Venables ( -1448)
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Margery de Mainwaring ( -1431)  |
| John Warren ( -1413)
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| William Mainwaring ( -1496)
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| Margaret Warren (1401- )
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