American businessman William Moncrief Jr. has an estimated net worth of $1 billion as of March 2013 according to Forbes. Moncrief started his career at age 10 when his father founded a six-billion barrel oil field in East Texas. In January 2010, Moncrief had the major discovery of his life after founding the “Davy Jones” offshore field which reportedly held up to6 trillion cubic feet of gas. HisMoncrief Offshore LLC holds 10% of the investigation. Now based in Fort Worth Texas, William Moncrief Jr. is a graduate of the University of Texas at Austin. He’s a widower and has five children. Now, he’s a benefactor ofTexas Christian University and also the University of Texas.