 King Henry VII discovered that he had joined in the conspiracy to crown Edmund de la Pole, 3rd Duke of Suffolk (d.1513), the last Yorkist claimant.For his complicity he was attainted and imprisoned in the Tower of London in February 1504, and so made incapable of inheritance.Released from prison by Henry VIII (1509–1547), Courtenay was pardoned and restored to his rights and privileges, as a sword bearer at the coronation on 24 June 1509.