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.
A few Horites quit Mount Seir to establish the family of Caphtor led by Eliezer who became the servants of Abraham.
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.