Peter III of Russia Peter III of Russia Peter III ( – ) (, "Pyotr III Fyodorovich") was Emperor of Russia for six months in 1762. He was born in Kiel as 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 Peter could hardly speak Russian and pursued a strongly pro-Prussian policy, which made him an unpopular leader. He was deposed and possibly assassinated as a result of a conspiracy led by his German wife,
Tsarevna Catherine Ivanovna of Russia V's daughters, she seems to have been the most capable. In 1708 the family moved to the new capital, Saint Petersburg. According to contemporaries, Catherine was a short, dark-haired, and pale beauty and was a popular socialite with her charm and sociability. At the request of her uncle Peter I, she was married on 19 April 1716 in Danzig to Karl Leopold, Duke of Mecklenburg-Schwerin. He had initially proposed to Catherine's sister Anna (then Dowager Duchess of Courland) but Peter I instead chose Catherine to be his bride. The marriage created a political alliance between Russia and Mecklenburg against Sweden,