Gregg Allman was born Gregory LeNoir Allman on December 8, 1947, in Nashville, Tennessee, United States to the family of Willis Turner Allman and Geraldine Alice Robbins, a couple who first met each other during the World War II in Raleigh. He had one elder brother Howard Duane Allman.
Allman's father, Willis Turner Allman, a former United States Army veteran, gave a hitchhiker a ride home and was shot and killed on December 26, 1949. Allman’s mother, Geraldine, moved with him and his brother to Nashville and raised them alone. While in Nashville, he was introduced to music by his grandmother’s mentally handicapped neighbor, Jimmy Banes.
Allman’s mother decided to study further and enrolled at a college to become a Certified Public Accountant. According to the rules at that time, she had to live on-campus. Thus, Allman and his brother had to be sent to Castle Heights Military Academy. Allman later realized that his mother had sacrificed so much in order to raise him and his brother single-handedly.