Genesis 28:9
So Esau went to Ishmael and took Mahalath, the daughter of Abraham's son Ishmael, the sister of Nebaioth, to be his wife in addition to the wives he had.
Genesis 36:3
and Basemath, Ishmael's daughter, sister of Nebaioth.
Genesis 25:13-17
These are the names of the sons of Ishmael, by their names, in the order of their birth: Nebaioth, the firstborn of Ishmael, and Kedar and Adbeel and Mibsam
Genesis 26:34
When Esau was forty he married Judith the daughter of Beeri the Hittite and Basemath the daughter of Elon the Hittite.
Genesis 36:13
These were the sons of Reuel: Nahath, Zerah, Shammah, and Mizzah. These were the sons of Basemath, Esau's wife.
Genesis 36:18
These were the sons of Oholibamah, Esau's wife: Chief Jeush, Chief Jaalam, and Chief Korah. These were the chiefs who descended from Oholibamah, Esau's wife, the daughter of Anah.