Peter III Fyodorovich was Emperor of Russia from 5 January 1762 until 9 July of the same year, when his wife, Catherine II, overthrew him in a palace coup d'état. He implemented many notable reforms during his reign, though he is criticised for undoing Russian gains in the Seven Years' War by forming an alliance with Prussia. Born: February 21, 1728 Died: July 17, 1762 In office: January 5, 1762 – July 12, 1762 Wiki link