Black Magic Rites (1973) on Netflix

In the cellar of the local cursed castle, Satanists are cutting out the hearts and drinking the blood of virgins in order to keep alive their Great Mistress Isabella Isabella Drupel [Rita Calderoni], a witch/vampire who was staked through the chest and burned to death in the 14th century. They currently await "the 25th moon", when Isabella (chained to a wall and with a big hole in her chest) will be able to fully reincarnate in another body. Neither the stories about the castle being the site of the Inquisition, nor the heartless village virgins being found all over, nor the fact that some odd occultist [Raoul Lovecchio] and his servant are also living in the castle, phases Jack Nelson [Mickey Hargitay], the castle's new owner. In fact, one of the first things Jack does is to throw an engagement party for niece Laureen [Rita Calderoni] who is marrying a local boy, Richard Brenton [William Darni].