Leonid Markovych Mosendz (1897-1948), a Ukrainian writer, was born in the city of Mohyliv Podil’s’kyi. In 1915, he graduated from the teacher’s seminary. During the first years of World War I he served in the Russian Imperial army and later enlisted in the army of the UNR. After the UNR’s fall, he emigrated to the West. In 1922, Mosendz moved from the Polish city of Częstochowa to Czechoslovakia. He completed his studies in the gymnasium in Poděbrady in 1924 and enrolled in the chemical and technological faculty of Ukrains’ka hospodars’ka akademiia (Ukrainian Economical Academy). In 1928, he graduated as a production engineer and stayed at UHA as a faculty member. In 1931, Mosendz defended his doctoral dissertation and started working in laboratories. In 1937-1938, he taught at State Academy in Svalyava in Zakarpattia region. After the region was occupied, he moved to Bratislava. In 1946, Mosendz moved to Austria. In Innsbruck, he befriended Yuri Klen and they published a collection of parody poems “Dyiavolichni paraboly” under a mutual pseudonym of Porfyrii Horotak. Suffering from tuberculosis, he moved to Switzerland in 1946. He died in the city of Blonay, Switzerland in 1948. His creative output consists of a collection of poetry “Zodiak” (1941); three poems: “Vichnyi korabel” (1940), “Kanitfershtan” (1945), “Volyns’kyi rik” (1948); three collections of novellas and short stories: “Zasiv”, “Liudyna pokirna”, “Vidplata”, and an unfinished novel “Ostannii prorok” (published posthumously in 1960).