In the universe of the Seventeen Moments of Spring, Stierlitz is the cover name for a Soviet super-spy Colonel Maxim Maximovich Isaуev (Макси́м Макси́мович Иса́ев), whose "real" name is Vsevolod Vladimirovich Vladimirov (Все́волод Влади́мирович Владимиров) [REF].
According to the novel Diamonds for the Dictatorship of the Proletariat, Isayev was born about in 1900 in the family of a Russian literature professor.