Born in Stryszów on the 12^th of April, 1879. He attended a secondary school in Wadowice and studied at the Faculty of Law and Administration of the Jagiellonian University, graduating in 1902. Then he was employed at the Kraków branch of the Office of the State Attorney of the Treasury and then at the General Counsel to the Republic of Poland. From 1920 he lectured at the Stephen Báthory University of Vilnius, where he was, among others, the dean of the Faculty of Law and Social Sciences. In October 1939 Bossowski returned to Kraków to assume a post of assistant professor at the Jagiellonian University. He was among the research fellows of that academy who were arrested by the Germans during the Sonderaktion Krakau and imprisoned in the Sachsenhausen Concentration Camp. He was held there from November, 1939, until February 1940 and died shortly after his release, on the 3^rd of May, 1940. His works include Ze studiów nad najmem i dzierżawą (1921), Ze studiów nad rei vindicatio (1927), and Die Abgrenzung des mandatum und der negotiorum gestio im klassichen und justinianischen Recht (1937).