William III, Count of Ponthieu

Count of Ponthieu (1095–1171)

Parents

• Agnes, Countess of Ponthieu
• Robert of Bellême, 3rd Earl of Shrewsbury

Children

• Clemence de Ponthieu
• John I, Count of Alençon
• Guy II of Ponthieu
• Ela de Ponthieu

Partners

• Helie of Burgundy