Vem gifte sig med William IV, Count of Ponthieu?

William IV Talvas (1179 – 4 October 1221) was William III, Count of Ponthieu and William IV (of the house of Belleme/Montgomery). He was Count of Ponthieu, ruler of a small province in northern France that fell under the suzerainty of the dukes of Normandy (later also kings of England) since at least the mid 11th century.

Alys of France, Countess of Vexin (4 October 1160 – c. 1218–1220), known in English as "Alice", was a French princess, initially betrothed to Richard I of England. Her engagement was broken in 1190, through negotiations between Richard and her half-brother Philip Augustus of France. Philip then attempted to betroth her to Richard's brother John but this betrothal was rejected. Alys married William IV, Count of Ponthieu, on 20 August 1195. She died between 1218 and 1220.