Genesis 28:9
So Esau went to Ishmael and married Mahalath, the sister of Nebaioth and daughter of Abraham's son Ishmael, along with the wives he already had.
Genesis 36:3
in addition to Basemath the daughter of Ishmael and sister of Nebaioth.
Genesis 25:13-17
These are the names of Ishmael's sons, by their names according to their records: Nebaioth (Ishmael's firstborn), Kedar, Adbeel, Mibsam,
Genesis 26:34
When Esau was forty years old, he married Judith the daughter of Beeri the Hittite, as well as 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 Esau's wife Basemath.
Genesis 36:18
These were the sons of Esau's wife Oholibamah: chief Jeush, chief Jalam, chief Korah. These were the chiefs descended from Esau's wife Oholibamah, the daughter of Anah.