2003 to 2011. In 1996, Moncrief accused Mary Ellen Lloyd, a former file clerk at Moncrief Oil, of embezzlement and testified against her in her criminal trial. In her defense, Lloyd stated that she had been Moncrief's mistress for sixteen years, beginning in 1979, which Moncrief denied under oath. On April 23, 1998, Lloyd was found not guilty of her embezzlement charges. He turned 100 in March 2020, and died on December 29, 2021, at the age of 101. References Notes Citations 1920 births 2021 deaths American billionaires American businesspeople in the oil industry American centenarians Businesspeople from Texas Cockrell School of Engineering alumni Culver Academies alumni Men centenarians Military personnel from Texas People from Fort Worth, Texas United States Navy personnel of World War II United States Navy reservists Wildcatters