on of J. T. Clements and Margaret Louisa (Lou) Chamberlain, of Burnet Co., TX. Husband of Winn M. (Winnie) Blankenship, whom he married in 1962. He graduated with a B.A. from Southwestern University, Georgetown, TX, in 1929, and in 1938 he received an L.L.B. degree from the University of Houston Law School. The same year, he was admitted to the TX bar. Two years later, he became a special agent for the FBI, serving in this capacity from 1940 to 1970. He was instrumental in the investigation of the JFK assassination, having had extensive contact both with Lee Harvey Oswald and Jack Ruby and having worked closely with the Warren Commission. He is interviewed in the Warren Report and mentioned multiple times. After retiring from the FBI, he served as assistant attorney general for the TX state division of crime prevention in Austin.