Czeslaw Wasilewski (Warsaw 1875 - Lodz 1947), who used the pseudonym Zygmuntowicz was a popular painter in Warsaw.  He was self-taught though a record exists of him at the Warsaw School of Fine Art. 

His preferred subject matter were hunting scenes, winter sleigh rides, elk and wild boars in the forest, soldiers on patrol and scenes in Warsaw.  He also painted some still lives and flowers.

He participated in exhibitions in Lublin (1922), The Warsaw Salon (1925, 1926, 1927), Katowice (1926), Czestochowa (1927), Gydnia (1929), Kalisz (1931) and Poznan (1928, 1931).

From the 1930s on he signed mainly with the alias I. Zygmuntowicz.

Biography from Agra Art S.A.