Nielsen Hayden genealogy
Family: William de Atherton / Elizabeth Pilkington (F21144)
m. 1399William de Atherton ( -1414) 
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Agnes Vernon ( -1407)
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| John Pilkington (1365-1421)
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| Margaret Verdun ( -1436)
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| William de Atherton (1385- )
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William Atherton ( -1440)  |