Peter III of Russia (d. 1762)
Peter III (Russian: Пётр III Фёдорович, romanized: Pyotr III Fyodorovich; 21 February [O.S. 10 February] 1728 – 17 July [O.S. 6 July] 1762) was Emperor of Russia for six months in 1762. He was born in Kiel as Charles Peter Ulrich of Schleswig-Holstein-Gottorp (German: Karl Peter Ulrich von Schleswig-Holstein-Gottorp), the only child of Charles Frederick, Duke of Holstein-Gottorp (the son of Hedvig Sophia of Sweden, sister of Charles XII), and Anna Petrovna (the elder surviving daughter of Peter the Great).

The German-born Peter III could hardly speak Russian and pursued a strongly pro-Prussian policy, which made him an unpopular leader. He was deposed by troops loyal to his wife, Catherine, the former Princess Sophie of Anhalt-Zerbst who, despite her own German origins, was a Russian nationalist. She succeeded him as Empress Catherine II. Peter III died in captivity soon after his overthrow, perhaps with Catherine's approval as part of the coup conspiracy. However, another theory is that his death was unplanned, resulting from a drunken brawl with one of his guards.Despite his generally poor reputation, Peter III made some progressive reforms during his short reign. He proclaimed religious freedom and encouraged education, sought to modernize the Russian army, abolished the secret police, which had been infamous for its extreme violence, and made it illegal for landowners to kill their serfs without going to court. Catherine reversed some of his reforms and carried through others, notably the annexation of church property.