(b Derpeczyn, Podolia, May 27, 1885; d Kraków, Feb 8, 1958).
Polish painter, sculptor and stage designer. In 1906–11 he studied painting at the studio of Teodor Axentowicz (d 1938) at the Academy of Fine Arts in Kraków, and he also visited France and Italy where he came into contact with the latest artistic currents. He began exhibiting, often abroad, in 1907, and from 1945 he had a painting studio at the Academy of Fine Arts in Kraków.
Until c. 1922 Pronaszko was one of the main organizers and exponents of modern art in Poland. In 1917, along with his brother Andrzej Pronaszko (1888–1961) and Tytus Czyżewski, he staged in Kraków the first exhibition of Polish Expressionists (later the Formists) and was one of the chief theoreticians of that tendency. The influence of Cubism is clearly evident in his pictures from that period (e.g. Act, 1917; Kraków, N. Mus.). At this time Pronaszko also made sculptures, producing one of the most celebrated Formist works, the wood monument to ...