When Michael Kunza was born on 24 September 1904, in Harvey, Cook, Illinois, United States, his father, Charles Kunza, was 41 and his mother, Agota Nobam, was 28. He married Mary Ann Slivon in 1927. They were the parents of at least 1 son. He died in 1952, in Juneau, Dodge, Wisconsin, United States, at the age of 48.