Ishmael: Son of Abraham: Daughter of, Marries Esau
Source: Nav
Genesis 28:9
Esau went to Ishmael and married Mahalath, the sister of Nebaioth and daughter of Abraham’s son Ishmael, in addition to the wives he already had.
Genesis 36:2, 3
Esau took his wives from the daughters of Canaan: Adah daughter of Elon the Hittite, Oholibamah daughter of Anah and granddaughter of Zibeon the Hivite, / and Basemath daughter of Ishmael and sister of Nebaioth.