Although Mary was said to have been more attractive than her sister, Anne seems to have been more ambitious and intelligent. When the king took an interest in Anne, she refused to become his mistress, being shrewd enough not to give in to his sexual advances and returning his gifts. By the middle of 1527, Henry was determined to marry her. This gave him further incentive to seek the annulment of his marriage to Catherine of Aragon. A year later, when Mary's husband died during an outbreak of sweating sickness, Henry granted Anne Boleyn the wardship of her nephew, Henry Carey. Mary's husband had left her with considerable debts, and Anne arranged for her nephew to be educated at a respectable Cistercian monastery. Anne also interceded to secure her widowed sister an annual pension of £100.