Together with his brothers, "Jason" and "Digger Barnes", "Jock Ewingthe founded the company "Ewing Oil". During the great depression, he bought all shares of his co-founders, making him the sole owner of the company. He made the company into a profitable business. With his wife, "Miss Ellie", he had three children, and he also has an illegitimate son, "Ray Krebbs". "Jock" dies in a helicopter crash in South America. His sudden and shocking death on the show was because he was diagnosed with bone marrow cancer while filming season four...He eventually passed away in the spring of 1981, at the age of 72.