George M. Cohan, Jr.

https://www.findagrave.com/memorial/9045478/George-Michael-Cohan

George Michael Cohan, Jr. (1914–2000) graduated from Georgetown University and served in the entertainment corps during World War II. In the 1950's, George Jr. reinterpreted his father's songs on recordings, in a nightclub act, and in television appearances on the Ed Sullivan and Milton Berle shows.

George Jr.'s only child, Michaela Marie Cohan (1943–1999), was the last descendant named Cohan. She graduated with a theater degree from Marywood College, Scranton, Pennsylvania, in 1965. From 1966 to 1968, she served in a civilian Special Services unit in Vietnam and Korea. In 1996, she stood in for her ailing father at the ceremony marking her grandfather's induction into the Musical Theatre Hall of Fame at New York University.

http://www.imdb.com/name/nm1076261/bio?ref_=nm_ov_bio_sm