Petty was born October 20, 1950, in Gainesville, Florida, the first of two sons of Kitty (Katherine) Petty, a local tax office worker, and Earl Petty, who was a traveling salesman. He had a brother, Bruce, who was seven years younger. His interest in rock and roll music began at age ten when he met Elvis Presley. In the summer of 1961, his uncle was working on the set of Presley's film "Follow That Dream", in nearby Ocala, and invited Petty to watch the shoot. He instantly became a Presley fan, and when he returned that Saturday, he was greeted by his friend Keith Harben, and soon traded his Wham-O slingshot for a collection of Elvis 45's. Of that meeting with Presley, Petty said, "Elvis glowed."