Perceval
Perceval le Gallois (original)
Filled with wonder at the sight of shining armor of a group of knights he has mistaken for angels, naive Perceval immediately solves the mystery of his destiny: he will become one of King Arthur’s knights. Valiant astride his horse, he rides from one ordeal to another, obsessed with a dream.
Starring Fabrice Luchini, André Dussollier, Solange Boulanger, Catherine Schroeder, Francisco Orozco, Deborah Nathan, Alain Serve, Daniel Tarrare, Pascale Ogier, Nicolaï Arutene
Watch "Perceval" from streaming services Tubi TV, Kanopy, Amazon released in 1978. It's a drama and history movie, and has a rating of 6.9 out of 10 from Imdb which is usually fine for this kind of movie.