Background
III, William Martin Diefenderfer was born on May 3, 1945 in Sharon, Pennsylvania, United States. Son of William M. and Bernadine M. (Freeborn) D.
III, William Martin Diefenderfer was born on May 3, 1945 in Sharon, Pennsylvania, United States. Son of William M. and Bernadine M. (Freeborn) D.
Bachelor of Arts, Dickinson College, 1967; Juris Doctor, Duquesne U., 1973; Master of Laws, U. London, England., 1974.
Regional director, Pennsylvania Higher Education Agency, Harrisburg, 1967-1973; staff attorney commission on education and labor, United States House of Representatives, 1975-1976; assistant director domestic council, The White House, Washington, 1976-1977; administrative assistant and legal counsel to, Congressman from 23d District of New York, 1977-1979; chief counsel commission on commerce, science and transportation, United States Senate, Washington, 1979-1983; member, McNair, Glenn, Konduros, Corley, Singletary, Porter & Dibble, P.A., Washington, 1983-1985; chief of staff, counsel to chairman, United States Senate Committee on Finance, Washington, 1985-1986; partner, Wunder & Diefenderfer, Washington, 1986-1989; deputy director, Office Management and Budget, Washington, 1989-1991; partner, Wunder, Diefenderfer, Cannon & Thelen, Washington, since 1991.
Served with United States Army, 1970-1971. Member District of Columbia Bar Association, Pennsylvania Bar Association.
Married Sandra J. Hoover, August 7, 1976. Children: William Martin IV, Barret.