Osiris

Osiris was the Egyptian god of the underworld, fertility and judgement, who was often seen as the first pharaoh of Ancient Egypt.

Overview
Osiris was the son of Geb and Nut, and brother to Isis, Set and Nephthys. He overtook the role of his Great-grandfather Ra as the ruler of Ancient Egypt so that the latter could become the sun and married his sister Isis.

Osiris was credited as the first Pharaoh and was said to bring civilisation and agriculture to the Nile river, ruling as a just and fair king. His brother Set grew jealous over his brother and eventually managed to murder him. The ancient world railed into chaos because of this, but Osiris was resurrected by Isis and would become the ruler of the Egyptian Underworld.

Isis also bore him one son, Horus, who would eventually defeat Set and reclaim his father's honour and throne. He is also sometimes said to be father of Anubis with Nephthys.