Guillaume was born in Angleterre, the son of Arnulf II d'Ardres but his mother is unknown. The date is not known.
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Arnulf II d'Ardres |
Arnoul I d'Ardres |
Elbodon de Bergues |
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Adèle de Selvesse d'Ardres |
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Mahaut de Marquise |
Geoffroy |
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| Event | Date | Details | Source | Multimedia | Notes | ||
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| Birth |
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| Attribute | Date | Description | Details | Source | Multimedia | Notes |
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| Nobility Title | chevalier |