In section R of Calvary Cemetery located in Pittsburgh PA. is the marker from Frank Gorshin. He is buried next to hus parents and a brother.
He is best remembered for being the Riddler in 10 episodes of the 1960's TV version of Batman. John Astin from the Addams Family did appear as the Riddler once.
Gorshin did appear in the season 3 episode 'Let That Be Your Last Battlefield' of Star Trek.