Brad Cox’s parents were pretended to be of Scottish or Irish origin.
Brad Cox was born on May 2, 1944, in Fort Benning, Georgia, United States. He is a son of Dewey M. Cox, a dairy farmer, and Nancy Cox, an elementary schoolteacher. Brad has a brother.
Soon after Brad’s birth, the family relocated to father's birthplace in South Carolina where the boy spent his childhood and youth. Helping his father to take care of the farm, Cox had experience in milking cows.