Father: Baron Guy I of Ponthieu-Montreuil Born: 1030 Married: Unknown Died: October 13, 1101
Mother: Princess Ada of Amiens Born: 1030 Died: March 1065
Children: 1. Princess Ada of Ponthieu (b.1054) 2. Princess Agnes of Ponthieu (b.1056) 3. Count Guy II of Ponthieu (b.1059) 4. Count Hugh III of Montreuil (b.1062) 5. Princess Adelise of Ponthieu (b.1065)