The French former emperor Napoleon I left Cantillon 10,000 francs (around £500 at the time and ) in a codicil added to his will on 24 April 1821, just 11 days before Napoleon's death. In the codicil Napoleon justified the assassination attempt as revenge on Wellington for exiling him to St Helena, for the executions of his former generals Michel Ney and Charles de la Bédoyère and for the removal of artifacts from French museums (many of which had been looted by France from occupied territories). The exile was less harsh than the punishment of execution that the French Bourbons and Prussians had pressed for after Napoleon's 1815 defeat. This codicil of Napoleon's will caused outrage when it became known in England, where it was common knowledge that Wellington had expressly forbidden his men from targeting Napoleon on the field of Waterloo. Wellington considered that the bequest was the "greatest blot" on Napoleon's character.