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.
BSB · Berean Standard Bible
Then went Esau unto Ishmael, and took unto the wives which he had Mahalath the daughter of Ishmael Abraham’s son, the sister of Nebajoth, to be his wife.

Note Mahalath: or, Bashemath

KJV · King James Version
So Esau went to Ishmael, and took, in addition to the wives that he had, Mahalath the daughter of Ishmael, Abraham’s son, the sister of Nebaioth, to be his wife.
WEB · World English Bible
and Esau went unto Ishmael, and took, besides the wives that he had, Mahalath the daughter of Ishmael Abraham’s son, the sister of Nebaioth, to be his wife.
ASV · American Standard Version

Related passages

From the Treasury of Scripture Knowledge, grouped by the word they explain.

unto Ishmael
Genesis 25:13–17; Genesis 36:3, 13, 18
Mahalath
called also, Bashemath.
Genesis 36:3