The Curse of the Werewolf (1961)

In the Eighteenth Century, in Spain, a beggar comes to the castle of a cruel marquee on his wedding day to beg for food, and the marque locks him in his dungeon, where he is forgotten. The mute daughter of the jailer feeds him along the years. When she grows-up, the widower marquee unsuccessfully tries to shag her and locks the servant in the dungeons with the beggar that rapes her. When she is released, she kills the marquee and flees to the forest. She is found living like an animal in the woods by Don Alfredo and he brings her home. Soon his servant Teresa finds that she is pregnant. When she gives birth to a boy on Christmas, she dies and the boy Leon is raised by Don Alfredo and Teresa. A few years later they learn the curse that the boy carries with him, and the local priest advises that he must be raised with love. What will happen to Leon?