Nielsen Hayden genealogy
Family: John Percival / Millicent de Sancto Mauro (F17699)
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Roger Percival ( -1310)
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Joan de Breteche (1272-1339)
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| John Percival ( -1339)
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| Millicent de Sancto Mauro ( -1339)
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Walter Percival (1327-1348)  |