Yemelyan Pugachev
Yemelyan Ivanovich Pugachev () (c. 1742 – ) was a Russian Cossack who led a great popular insurrection during the reign of Catherine the Great, claiming to be her late husband, Emperor Peter III. Alexander Pushkin wrote a notable history of the rebellion, "The History of Pugachev", and he recounted some of the events in his novel "The Captain's Daughter" (1836).
Battle of Kazan (1774)
Pugachev's family, his wife Sofia Dmitrievna, his 11-year-old son Trofim, daughters Khristina and Agrafena and his brother, were imprisoned in Kazan during the rebellion. Sofia Pugacheva should confirm, that Yemelyan isn't Peter III, but a Cossack. She could visit markets to spread this information. When Pugachev's group marched they occasionally met his family. Trofim called him, but Pugachev said that he is simply a friend of this family. So, he took them to unit transport.