Bill Betenson's great-grandmother was the sister of outlaw Butch Cassidy, and it was from her that he learned that Cassidy didn't die in Bolivia in a hail of bullets.
"She (Lula Parker Betenson) was adamant that he came back," he said. "I support her."
Lula Parker Betenson never divulged where her brother was buried. She wanted to keep the curious away, but took heat for keeping the secret.
Betenson has some ideas about where Cassidy is buried. But he's not talking. [Link]