Horus/Saturn/Cronus/Kumarbi/ Nimrod/UrZababa/Amraphel son of Osiris and Isis married Rhea/Hathor and led the clan of "Horites". In reality he was the son of his father's slayer Seth who then took the widow as his wife. But his mother raised him as the son of Osiris.
When Horus was old enough he castrated Seth for violating his mother. Horus then took control of Mount Seir.
Seth's other children became the Giants.
When the Horites had become powerful the Horus Kings began eating their firstborn sons as it was foretold that a firstborn son of Horus would be responsible for ending the Horite kingdom.
The Idumeans destroyed the Horites and took control of Mount Seir.
A few Horites survived to establish the family of Caphtor.
Harpocrates/Hades/Pluto to Asar. Harpocrates/Hades/Pluto was the father of Imsety, Hapi, Duamutef, and Qebehsenuef.
The Horites were the Horus King Pharaohs descended from Horus (the elder) who along with his brother Set the servant of El-Ra were both sons of Lotan/Apep/Geb son of Shu/Seir. Horites were originally hostile towards Ra (and therefore their Set brethren too) but were eventually conquered by the Edomites. Apep attacked El-Ra, but was defeated by Set servant of El-Ra. In time Horus/Osiris/Serapis took over the role of Ra, and Set came to be unfairly associated with the Apep. Akhenaten tried to restore the ancient monotheistic religion of El-Ra but failed.
Seth the Elder married Isis the Na'amahite daughter of Cana'an by levirate marriage. Isis raised up Harpocrates/Horus the Younger as a son to Serapis/Osiris/Asar/Meshkiangkasher.
Seth the Elder can be identified with Geb
see Kaftorite Nation