Little is known of the early life of Ray Krebbs. He lived with his mother, Margaret Krebbs, and her new husband, Amos Krebbs, who he believed to be his father, when his real father was Jock Ewing. When he was fifteen, he came to work at Southfork Ranch. Jock Ewing made him the foreman, unaware that he was his son, but knowing who his mother was.