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 to 6 trillion cubic feet of gas. His Moncrief Offshore LLC holds 10% of the exploration.

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Currently based in Fort Worth Texas, William Moncrief Jr. is a graduate of the University of Texas at Austin. He is a widower and has five children. Currently, he is a benefactor of Texas Christian University and the University of Texas.