Little is known about the life and literary creations of Eugen Gagarin. This article deals with the facts known so far and explores archive material to expand and partially correct them. The writer Evgenij Andreevich Gagarin (1905‒1948) was born in the province of Arkhangelʼsk (Archangelʼskaja gubernija) and emigrated to Germany in 1933, where he started writing. Until his tragic accidental death in 1948 he wrote various oeuvres in German and in Russian, including the 1948 novel (‘The Return of the Cornet’), which bears autobiographical features. First published in Russia in 1991, it initiated the acquisition of his works in Russia. This article seeks to contributes to the academic analysis of Gagarin’s Œuvre by systematizing and completing the biographical data on Eugen Gagarin and his family, as well as the information on the publications of Gagarinʼs works.