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
Maria Alekseyevna of Russia Maria Alekseyevna of Russia Tsarevna Maria Alekseyevna (; 18 January 1660 - 9 March 1723) was a Russian Princess, daughter of Tsar Alexis of Russia and Maria Miloslavskaya, sister of Tsar Feodor III of Russia and Tsar Ivan V of Russia and half sister of Tsar Peter the Great. Maria Alekseyevna did not actively participate in the political plots of the Kremlin, but her open passive sympathy for Tsarevna Sophia Alekseyevna, Eudoxia Lopukhina and Alexei Petrovich, Tsarevich of Russia made her relationship to Tsar Peter tense. She maintained a contact with Eudoxia Lopukhina after Lopukhina had been placed in a