Answer: alyn

AnswerCrossword Clue
ALYNEarly Superman Kirk ..
ALYNKirk .., first movie Superman
ALYNMcCauley of the NHL
ALYNKirk who played the first big-screen Superman
ALYNKirk ..., first actor to play Superman on the big screen
ALYNKirk ..., first actor to play Superman on screen, 1948