When Cletus George Neiheisel was born on 13 December 1927, in Cincinnati, Hamilton, Ohio, United States, his father, Phillip Victor Neiheisel, was 36 and his mother, Ruth Margareta Moritz, was 35. He married Jeanne Ann Meister on 30 November 1950, in Hamilton, Ohio, United States. He lived in Green Township, Hamilton, Ohio, United States for about 10 years. He died on 9 August 2002, in Cincinnati, Hamilton, Ohio, United States, at the age of 74, and was buried in Saint Aloysius Gonzaga Catholic Cemetery, Cincinnati, Hamilton, Ohio, United States.