Brzechwa was born in
Żmerynka, Podolia to a
Polish family of Jewish descent. His father, Aleksandr Stanisław Lesman, was a
railway engineer and his mother Michalina, née Lewicka, was a French teacher. Jan spent a lot of his childhood traveling around Poland's eastern regions ("
Kresy") with his family. He lived in
Kiev, then in
Warsaw, and later in
Saint Petersburg. In 1916–1918, he studied veterinary medicine in
Kazan. In May 1918, he returned to Warsaw and began studying Polish literature at Warsaw University, where he remained until October 1918. During the
Polish-Soviet War, he volunteered for the 36th Regiment of the
Academic Infantry Legion, a unit composed of university students, and was decorated for his service. His formal writing debut took place in 1920 by way of various
humor magazines. He worked as an attorney for the
Society of Authors ZAiKS where he specialized in
copyright law. During World War II (just before its outbreak, he lived in Warsaw at 35 Żurawia Street), he avoided deportation to a
ghetto or
extermination camp, even though he was not in hiding; at the time, he was a farm worker on a farm in
Służewiec. This period marked one of the most important periods Brzechwa's work – he wrote works such as "The Academy of Mr. Kleks" and "Mr. Drops and His Troop," among others. He wrote two books continuing "The Academy..." ("The Travels of Mr. Kleks" and "The Triumph of Mr. Kleks") in 1961 and 1965, respectively. Brzechwa was friends with graphic artist
Jan Marcin Szancer, who provided numerous illustrations for his texts. In the 1950s, he wrote
socialist realist style poems containing
propaganda glorifying the ruling
Polish United Workers' Party (to which he himself was not a member) and the socialist system (e.g., "The March," "The Voice of America"). In later years, he remained politically neutral, being considered a passive opponent of the regime. In 1964, he signed the Letter of the Polish Writers Against the
Letter of 34, protesting against "the organized campaign in the Western press and on the airwaves of the subversive
Radio Free Europe, slandering the
Polish People's Republic." Brzechwa was a cousin of another famous Polish poet,
Bolesław Leśmian. He was married three times; first to Maria Sunderland, his first cousin once removed and a niece of the renowned Polish artist , then to Karolina Lentowa (née Meyer), and finally to Janina Magajewska (1915–1989). His daughter from his first marriage, Krystyna (born 1928), is a painter. ==Literary output==