People from Greene County

Donald Rex Clark (December 22, 1923 – August 6, 1989) was an American football player and coach who was perhaps best known as the head coach of the USC Trojans football team from 1957 to 1959. He compiled a 13–16–1 record while coaching at USC, going 0–5–1 against rivals UCLA and Notre Dame. The highlight of his career was in 1959, when USC shared the inaugural AAWU title in a three-way tie. However, he remains the only coach to post a losing record at USC over more than one season.

Robert K. Corbin (born November 17, 1928) is an American lawyer and politician from the state of Arizona who formerly served as Attorney General of Arizona.
He later served as president of the National Rifle Association of America from 1992 until 1993.

Dorothy Marie Mengering (née Hofert, formerly Letterman; July 18, 1921 – April 11, 2017), better known to Late Night and Late Show viewers as Dave's Mom, was the mother of late-night talk show host David Letterman and frequent telephone and live guest on his show.
She appeared on camera (identified as Dorothy Mengering) on Late Night with David Letterman on the "Parents' Night" broadcast of February 25, 1986, in which the parents of many Late Night staffers were also seen. Following several years of appearing via telephone, Mengering (usually billed as "Dave's Mom" or "Dave's Mom Dorothy", with no mention of her surname) became a recurring on-camera guest on Letterman's subsequent Late Show, initially by covering the 1994 Winter Olympics in Lillehammer, Norway. She lived in Carmel, Indiana, at the time of her death.