Nielsen Hayden genealogy
Family: Enguerrand de Picquigny / Marguerite de Ponthieu (F21901)
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Jean I of Ponthieu (1140-1191)
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Beatrice Campdavaine (1160-1205)
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William II Talvas (1171-1221)  |
| Enguerrand de Picquigny ( -1224)
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| Gérard II de Picquigny ( -1248) |