William IV, Count of Ponthieu
William IV Talvas was William III, Count of Ponthieu and William IV. He was Count of Ponthieu, ruler of a small province in northern France that fell under the suzerainty of the dukes of Normandy since at least the mid 11th century. Wikipedia
Born: 1179
Died: October 1221 (age 42 years)
Great grandchildren: Eleanor of Castile, Ferdinand, Count of Aumale, Reginald I of Guelders, and more
Grandchildren: Joan, Countess of Ponthieu, Agathe de Dammartin, Marie de Dammartin, and more
Spouse: Alys of France, Countess of Vexin (m. 1195)
Parents: John I, Count of Ponthieu
Children: Marie, Countess of Ponthieu