Kazimierz Dunin-Markiewicz was born on March 15, 1874 in Denikhovka, Kiev Governorate, Russian Empire. He was an actor and writer, known for Powrót (1920) and Córka pani X (1920). He was married to Constance Gore-Booth. He died on December 2, 1932 in Warsaw, Mazowieckie, Poland.