William I, Count of Boulogne

Parents

• Stephen, King of England
• Matilda of Boulogne

Children

Siblings

• Eustace IV, Count of Boulogne
• Marie I, Countess of Boulogne
• Gervase of Blois
• Almaric (?)
• William (?)
• Ralph (?)
• Sybilla (?)
• Matilda de Blois
• Baldwin de Boulogne

Partners

• Isabel de Warenne, Countess of Surrey