Son of Kong 3

The Son of Kong appears in the movie of the same name. He doesn't match up to his old man. Still, he is people-friendly; it's probably 45 years since I saw it, but to the best of my recollection, he dies while in the act of sacrificing his life for a human one.

I was going to ask RIA members at large if this movie was the first sequel, but then I remembered, correct me if I'm wrong, that there was more than one film with Valentino playing "The Shiek". It might have been something as obvious as "The Shiek returns".