In 1525, Henry VIII became enamoured of Anne Boleyn, a lady-in-waiting to Queen Catherine; Anne was between ten and seventeen years younger than Henry, being born between 1501 and 1507. Henry began pursuing her; Catherine was no longer able to bear children by this time. Henry began to believe that his marriage was cursed and sought confirmation from the Bible, which he interpreted to say that if a man marries his brother's wife, the couple will be childless. Even if her marriage to Arthur had not been consummated (and Catherine would insist to her dying day that she had come to Henry's bed a virgin), Henry's interpretation of that biblical passage meant that their marriage had been wrong in the eyes of God. Whether the Pope at the time of Henry and Catherine's marriage had the right to overrule Henry's claimed scriptural impediment would become a hot topic in Henry's campaign to wrest an annulment from the present Pope. It is possible that the idea of annulment had been suggested to Henry much earlier than this, and is highly probable that it was motivated by his desire for a son. Before Henry's father ascended the throne, England was beset by civil warfare over rival claims to the English crown, and Henry may have wanted to avoid a similar uncertainty over the succession.