Charles Van Doren, a Columbia University English instructor and a member of a distinguished literary family who confessed to Congress and a disillusioned nation in 1959 that his performances on a television quiz show had been rigged, died on Tuesday in Canaan, Conn. He was 93.

He died at Geer Village, a retirement community, near his home in Cornwall, Conn., where he had lived for several years, his son, John, said.

In the heyday of quiz shows in the 1950s, when scholarly housewives and walking encyclopedia nerds battled on “The $64,000 Question” and “Tic-Tac-Dough,” Mr. Van Doren was a rare specimen: a handsome, personable young intellectual with solid academic credentials, a faculty post at a prestigious university and an impressive family pedigree.

His father was Mark Van Doren, a Pulitzer Prize-winning poet, literary critic and professor of English at Columbia. His mother, Dorothy Van Doren, was a novelist and editor. And his uncle, Carl Van Doren, had been a professor of literature, a historian and a Pulitzer Prize-winning biographer. Charles himself had bachelor’s and master’s degrees, a $4,400-a-year position at Columbia and an honest look about him.