(1879 - 1934)
Painter, draftsman, printmaker. The youngest brother of painter Maurice. In 1896-1902 he studied at Akademia Sztuk Pięknych (The Academy of Fine Arts) in Kraków under the direcion of Jacek Malczewski and Teodor Axentowicz. In 1903 he continued his studies in Munich in Anton Ažbé's school, meanwhile copying seventeenth-century Dutch painting, what enable him going to Paris next year. However, he returned to Poland soon, where in 1904-1907 he was associated with artistic environment gathered around Samuel Hirszenberg. In 1905, together with Witold Wojtkiewicz, he was co-initator of formation of Grupa Pięciu. Then, in 1906, together with Xawery Dunikowski, he travelled to Jerusalem, where he became a teacher in school of painting in Bazalel. During his stay in Paris, he was asscosciated with artists from Montparnasse. He became friends of Mela Muter, Eugeniusz Zak, Moses Kisling (Gottlieb fought a duel with him on guns and swords) and critic Adolf Basler. He exhibited at Paris Salon (1904, 1908-1913, 1926, 1928-1929, 1931, 1934). He took part in the exercises and work of Parisian secret force of the military organization Sagittarius. In 1914 he joined the Polish Legions and fought at the front, what he depicted on hundreds of drawings and prints of soldiers. In 1929 he became a member of artisitic group Rytm. He participated at many exhibitions: in Barcelona (1912), Vienna, Geneva (1928), Paris (1929), Pittsburgh (1933).