(son of Rep. John James Duncan), US Representative for Tennessee 2nd district.
First elected in 1988, in a special election for the succession of his father, he held this seat for more than 30 years; he didn't run for reelection in 2018.

Born in Lebanon, TN, July 21, 1947; B.S., University of Tennessee, Knoxville,TN, 1969; J.D., National Law Center, George Washington University, Washington, DC 1973; lawyer, private practice; Army National Guard, 1970-1987; United States Army Reserve, 1970-1987; state trial judge, Knox County, Tenn., 1981-1988;