Catherine I of Russia wife. It is clear that Menshikov and Marta formed a lifetime alliance. It is possible that Menshikov, who was quite jealous of Peter's attentions and knew his tastes, wanted to procure a mistress on whom he could rely. In any case, in 1703, while visiting Menshikov at his home, Peter met Marta. In 1704, she was well established in the Tsar's household as his mistress, and gave birth to a son, Peter. In 1705, she converted to Orthodoxy and took the new name of Catherine Alexeyevna ("Yekaterina Alexeyevna"). She and Darya Menshikova accompanied Peter and Menshikov on their military excursions.
Catherine I of Russia Mons had had an affair, but there is no evidence for this. Peter died (28 January 1725 Old Style) without naming a successor. Catherine represented the interests of the "new men", commoners who had been brought to positions of great power by Peter based on competence. A change of government was likely to favor the entrenched aristocrats. For that reason during a meeting of a council to decide on a successor, a coup was arranged by Menshikov and others in which the guards regiments with whom Catherine was very popular proclaimed her the ruler of Russia, giving her the title