Guillaume was born before 1085 in Carshalton, Borough of Sutton, London, England , the son of Geoffroy Fitz Eustache and Béatrice de Mandeville.
His wife is not known. They were married, but the date and place have not been found. Their two known children were Rohèse (1104-<1179) and Guillaume Faramus (?-?).
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Guillaume de Boulogne |
Geoffroy Fitz Eustache |
Eustache II de Boulogne |
Eustache I |
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Mahaut de Louvain |
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Béatrice de Mandeville |
Geoffroy I de Mandeville |
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Adélize de Balts |
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| Event | Date | Details | Source | Multimedia | Notes | ||
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| Birth | BEF 1085 |
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