When John Henry Nondorf Jr was born on 12 November 1907, in Dyer, Lake, Indiana, United States, his father, John Henry Nondorf, was 39 and his mother, Catherina Elisabeth Moeller, was 32. He married Marcella Petrane Koepl on 26 September 1928, in Edson, Chippewa, Wisconsin, United States. They were the parents of at least 3 sons and 1 daughter. He lived in Saint John, Lake, Indiana, United States in 1910 and Edson, Chippewa, Wisconsin, United States in 1930. He died on 14 April 1977, at the age of 69.