 There is scholarly dispute over whether Alfonso was the Iberian king involved, and if so, whether the daughter of William involved was Agatha or a different daughter, Adelaide.In 1069, the betrothal with Agnes, daughter of William VIII, Duke of Aquitaine was signed.At the time, she was barely 10 years old and so it was necessary to wait until she reached age 14 for the official wedding, which took place in late 1073 or early 1074.