Catherine Howard was the fifth wife of Henry VIII, whom she married on 28 July 1540, just three weeks after the king's brief marriage to Anne of Cleves was annulled. But the union between Henry, who was nearly 50 years old, and Catherine, who was probably just a teenager, ended in tragedy: the king discovered Catherine's illicit sexual past and she was charged with treason. Catherine was executed at the Tower of London on 13 February 1542