Esau Marries Ishmael’s Daughter

Now Esau saw that Isaac had blessed Jacob and sent him away to Paddan-aram to take a wife from there, and that as he blessed him he charged him, "You shall not marry one of the Canaanite women," and that Jacob had obeyed his father and his mother and gone to Paddan-aram.

So when Esau saw that the Canaanite women did not please his father Isaac, Esau went to Ishmael and took Mahalath daughter of Abraham's son Ishmael, and sister of Nebaioth, to be his wife in addition to the wives he had.