Catherine I of Russia to bribe the Ottoman grand vizier Baltacı Mehmet Pasha into allowing a retreat. Mehmet allowed the retreat, whether motivated by the bribe or considerations of trade and diplomacy. In any case Peter credited Catherine and proceeded to marry her again (this time officially) at Saint Isaac's Cathedral in St. Petersburg on 9 February 1712. Catherine was Peter's second wife; he had previously married and divorced Eudoxia Lopukhina, who had borne him the Tsarevich Alexis Petrovich. Upon their wedding, Catherine took the style of her husband and became Tsarina. When Peter elevated the Russian Tsardom to Empire, Catherine became Empress. The
Peter II of Russia post-Petrine Russian monarch given that honor; along with Ivan VI (who was murdered and buried in the fortress of Shlisselburg), he is the only post-Petrine monarch not buried in the Peter and Paul Cathedral in Saint Petersburg. With Peter's death, the direct male line of the Romanov Dynasty ended. He was succeeded by Anna Ivanovna, daughter of Peter the Great's half-brother and co-ruler, Ivan V. 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