and rescued him from all his troubles and granted him favor and wisdom in the sight of Pharaoh, king of Egypt, who made him a governor over Egypt and his [i.e., the king's] household.

On their second trip Joseph identified himself to his brothers, and Pharaoh was made aware of his origins.

and then, when he was abandoned [as the Egyptians required], the daughter of Pharaoh took him in and cared for him as her own son.