Petty: The Biography by Warren Zanes:
Troas Avery, Kitty’s mother, didn’t simply have issues with her son-in-law Earl Petty; she had issues with all Earls. She’d married two of them. Her eldest daughter, Evelyn, married one. By the time her daughter Kitty did the same, Troas was refusing to speak the name “Earl.” She called Kitty’s Earl “Petty.” She called Evelyn’s Earl “Jernigan.” The name brought her bad luck. And, in Earl Petty’s case, it wasn’t just the name—she didn’t like him. He drank and gambled, without good results in either department. He made it to church on time, yes, but the results weren’t so good there either. And now he was going to try his hand at parenting.