LOL Some time ago a friend of mine told me that Nicolas was in end titles. I couldn't believe it because I like The Godfather movies. I had to check it then. I watched end titles many times... According to IMDB.com, if you'll do a search for The Godfather 3, in full cast and crew you'll see in "Produced by" that this man is called Nicholas Gage. And to be honest I don't think it was a mistake made with Nicolas Cage spelling name. This man who was an executive producer was born long before NC.
Nicholas Cage is listed in credits following the last Godfather chapter. I've viewed the Godfather trilogy many times and don't remember seeing him....did he actually appear, even in a family crowd scene, or just work with on movie with his uncle, Francis Ford Copolla? I'm a long-time fan. Thanks!