Peter III of Russia

Peter III Fyodorovich (Russian: Пётр III Фёдорович, romanized: Pyotr III Fyodorovich, born Charles Peter Ulrich of Schleswig-Holstein-Gottorp; 21 February 1728 – 17 July 1762) 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. Peter was the son of Duke Charles Frederick of Holstein-Gottorp, and Grand Duchess Anna Petrovna of Russia, who died of puerperal fever after childbirth.