Kimbrough appeared in the Stephen Sondheim musical Company with his current wife Beth Howland in 1970. Kimbrough earned a Best Supporting or Featured Actor (musical) Tony nomination for his role in this musical.
Kimbrough had a son, John Kimbrough, with former wife, Mary Jane Kimbrough. John was a member of the rock group Walt Mink.
Kimbrough is married to actress Beth Howland, Vera from Alice.