Peter II of Russia Peter II of Russia Peter II Alexeyevich (Russian: Пётр II Алексеевич, "Pyotr II Alekseyevich") ( – ) reigned as Emperor of Russia from 1727 until his death. He was the only son of Tsarevich Alexei Petrovich (son of Peter the Great by his first wife, Eudoxia Lopukhina) and of Charlotte Christine of Brunswick-Lüneburg. Peter was born in Saint Petersburg on 23 (O.S. 12) October 1715. His mother died when he was only ten days old. His father, Prince Alexis, accused of treason by his own father, Peter the Great, died in prison in 1718. So three-year-old Peter and his four-year-old
Duke Peter Alexandrovich of Oldenburg Duke Peter Alexandrovich of Oldenburg Peter Alexandrovich of Oldenburg (Duke Peter Friedrich Georg von Oldenburg) (21 November 1868 – 11 March 1924) was the first husband of Grand Duchess Olga Alexandrovna of Russia, the youngest sister of Tsar Nicholas II. He was born in Saint Petersburg, the only child of Duke Alexander Petrovich of Oldenburg (1844–1932) and Eugénie Maximilianovna of Leuchtenberg (1845–1925). His mother was a granddaughter of Tsar Nicholas I of Russia through Nicholas's daughter, Grand Duchess Maria Nikolayevna, and his father was a great-grandson of Tsar Paul I of Russia through his paternal grandmother Grand Duchess Catherine Pavlovna.