Hamilton Camp has been around close to forever, starting as a folkie in the late 1950s or very early 60s. See link below for more information:
http://www.jacana.org.uk/djc/djcrev09.htm
My favorite TV role of his was a shortlived series, HE AND SHE, starring Dick Benjamin and Paula Prentiss (I believe he was listed in the credits as Hamid Hamilton Camp but maybe I'm imagining that.) They were a young couple living next door to a fire station. Camp was the landlord or super - for a description of the show, see
http://www.tvparty.com/recheshe.html
It was ahead of its time, ran only one season, and I would love to see it turn up again on TV Land.