For the first time, the article presents the life of the Ryazan landowner Nikifor Mikhailovich Koshelev, whose service in the 1620s was closely associated with Saratov. Having been appointed commander of the streletsky order in the left-bank Saratov (streletsky head), he distinguished himself in many battles against thieves Cossacks and Tatars, for which he was twice awarded by the government of Mikhail Romanov. His further service has been traced during the embassy to Denmark together with Vasily Gavrilovich Korobyin.
