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Female Sybille De Boulogne Click to view Sybille De Boulogne in the family tree

Sybille's father was Lambert II De Boulogne Comte De Lens and her mother was Mathilde De Ponthieu.  Her paternal grandparents were Eustace I Comte De Boulogne and Maud De Louvain. She had a half-sister named Judith.

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