Marjoe Gortner
Marjoe Gortner, the youngest ordained minister in US History. He performed a marriage ceremony at the age of 4, his father left the family and took all the $ when he was 13, Marjoe ran away from home, became a hippie, then when he needed money later in his life he would hold revivals for half the year and live the hippie life the other half.
Eventually his conscience caught up with him and he admitted he was only scamming people. He also made a documentary about how he (and in his opinion all the others) scam people out of money.
This is a clip from his documentary, covering his early life:
Coverage of his later life when he scammed people:
And here is one last one with a little more information from him about how he did it as well as more footage of him after his revivals: