The Iron Crown
La corona di ferro (original)
In the kingdom of Kindaor, traitor Sedesmondo kills his brother, the King of Kindaor, and becomes the tyrant of kingdom. He abandons the prince Arminio to beasts in the woods, but lions don't kill him and breed him as one of them.
Starring Gino Cervi, Massimo Girotti, Luisa Ferida, Elisa Cegani, Paolo Stoppa, Marcello Mastroianni
Watch "The Iron Crown" from streaming services Fandor, Fandor (Prime) released in 1941. It's a fantasy and action & adventure movie, and has a rating of 6.5 out of 10 from Imdb which is usually fine for this kind of movie.