Guillaume was born after 1179 in Ponthieu, Somme, Picardie, France, the son of Jean I de Ponthieu and Béatrice Candaviaine de Saint-Pôl.
He died on 04 OCT 1221. The place is not known.
His wife was Adélaïde de France, who he married on 20 AUG 1195. The place has not been found. Their only known child was Marie-Jeanne (1199-1250).
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Guillaume III Talvas de Bellême |
Jean I de Ponthieu |
Guy II de Masnières |
Guillaume de Ponthieu |
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Adélaïde de Bourgogne Duché |
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Ide de Saint-Pôl |
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Ansleme I de Campdavaine |
Hugues III de Campdavaine |
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Eustachie de Blois |
Eustache IV de Blois |
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| Event | Date | Details | Source | Multimedia | Notes | ||
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| Birth | AFT 1179 |
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| Death | 4 OCT 1221 |
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| Attribute | Date | Description | Details | Source | Multimedia | Notes |
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| Nobility Title | II ou III comte de Ponthieu, et d'Alençon | |||||
| Nobility Title | baron du Saosnois | |||||
| Nobility Title | IV comte de Bellême/Montgommery |