The article presents for the first time the biography of the Saratov voivode Prince Ivan Mikhailovich Boryatinsky, as well as brief information about his ancestors. Prince I. M. Boryatinsky began his service at the court of Tsar Mikhail Romanov in the late 1630s. As a tenant, and then a Moscow nobleman, he was the voivode of Dankov. Under Tsar Alexei Mikhailovich, he continued his service with the rank of stolnik, was a voivode in Vyazma, participated in the wars against Poland and Sweden, and suppressed the uprising of Stepan Razin.