No this is not a "Percy Jackson goes to Hogwarts" thing. Sirius Black managed to rope in a goddess, this one being Aphrodite. He and Aphrodite had a demigod and witch hybrid child they named Pandora Black. Sadly, when Pandora was only a year old, Sirius was falsely convicted of selling his best friend James Potter and his wife Lily to Voldemort and he went to Azkaban, leaving Pandora and Aphrodite. She managed to raise Pandora for two years until Zeus forced her to take Pandora to the mortal world. Pandora became the youngest camper of Camp Half-Blood and Aphrodite claimed her the same night she brought Pandora to the Camp. Pandora immediately showed that she wasn't a normal child of the Love Goddess. She wanted to train with swords and followed Clarisse La Rue like a puppy does with its owner. Ares even favored the child greatly. She stayed at the camp full time until her 11th birthday, when she received a letter from her father's old wizarding school saying that she's been accepted.