Leigh, Thomas Watkins was born on April 8, 1903 in Winnsboro, Louisiana, United States. Son of Benjamin Watkins and Olive (Buckingham) Leigh.
Bachelor of Laws, Louisiana State University, 1924.
Bar: Louisiana bar 1924. Private practice, 1924-1929. Member firm Theus, Grisham, Davis & Leigh, Monroe, Louisiana, from 1929.
Director First National Bank West Monroe.
Member Louisiana Government's Special Commission to Study Needs Higher Education Louisiana, 1954-1956. Member Public Affairs Research Council. Member Governor Louisiana Special Tidelands Advisory Committee, 1964-1972.
Member board suprs. Louisiana State University, 1940-1960, chairman, 1948-1950. Served as Lieutenant commander of The United States Navy Reserve, 1942-1945. Fellow American Bar Foundation.
Member American Bar Association (house of deals 1958-1980, Board of Governors 1975-1978), Louisiana Bar Association (president 1954-1955, governor), American Counsel Probate Attorneys, American College Trial Lawyers, Scribes, American Law Institute, Louisiana Law Institute (council, vice president), International Association Insurance Counsel, American Judicature Society, Order of Coif, Stair Society (Edinburgh), Gamma Eta Gamma, Theta Xi. Clubs: Army and Navy (Washington).