Guillaume was the son of Guillaume de Ponthieu and Adélaïde de Bourgogne Duché. The date and place of his birth have not been found.
He died in BET 1166 AND 1171. The place is not known.
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Guillaume de Ponthieu |
Guillaume de Ponthieu |
Robert II de Montgommery |
Roger II de Montgommery |
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Mabile Talvas de Bellême |
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Agnès de Ponthieu |
Guy I de Ponthieu |
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Ade d'Amiens |
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Adélaïde de Bourgogne Duché |
Eudes I de Bourgogne |
Henri de Bourgogne |
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Sibylle de Barcelone |
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Sybille de Bourgogne |
Guillaume I de Bourgogne |
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Étiennette de Longwy |
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| Event | Date | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|
| Death | BET 1166 AND 1171 |
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