Henry's marriage to Catherine of Aragon had produced no sons who survived infancy; the Wars of the Roses were still within living memory, leading to the fear of a power struggle after Henry's death. Henry felt the people would accept only a male sovereign, not his daughter Mary. He believed God had cursed him for the sin of marrying the widow of his elder brother, and that the papal dispensation for that marriage was invalid because it was based upon the claim that Catherine was still a virgin after her first husband's death. Henry argued that Catherine's claim was not credible, and thus the dispensation must be withdrawn and the marriage annulled. His motivation has been attributed to his determination to have a son and heir, and to his desire for Anne Boleyn, one of his wife's maids-of-honour. Catherine had no further pregnancies after 1519; Henry began annulment proceedings in 1527.