Genesis 32:3

And Jacob sent messengers before him to Esau, his brother, unto the land of Seir, the country of Edom. As Esau's family grew, he gradually loosened the bonds which tied him to the home of his parents, since he felt that he really had no part in the patriarchal blessing. He made the wilderness of Zin, with Mount Hor, his home, the level portion of which was known as the fields of Seir.