Waclaw Kowalski was born on 2 May 1916 in Gzhatsk, Smolensk Governorate, Russian Empire [now Gagarin, Smolensk Oblast, Russia]. He was an actor, known for How I Unleashed World War II (1970), Prom (1970) and Adventure in Marienstadt (1954). He was married to Stanislawa Osikowska-Kowalska. He died on 27 October 1990 in Brwinów, Mazowieckie, Poland.