WHEN GUY CLARK WROTE ABOUT THE MAN WHO RAISED HIM, HE NEVER ONCE PUT HIS NAME IN THE SONG. His name was Jack Prigg. He rented a room in the Clark Hotel in Monahans, Texas — Guy's grandmother Rossie ran it, and Jack was her boyfriend. He had been a wildcatter who drilled wells in South America and the Middle East in the 1920s before settling in with Gulf Oil. With Guy's father overseas in the Army during World War II, Jack became the man in the boy's life. He took him to the Green Frog Cafe to si