Mieczyslaw Gielniewski was born on November 16, 1892 in Stradów, Poland, Russian Empire. He was an actor, known for Ulani, ulani, chlopcy malowani (1932), Geniusz sceny (1939) and Glos pustyni (1932). He died on January 28, 1951 in Warsaw, Mazowieckie, Poland.