Genesis 28 9
So he went to Ishmael's family and married an additional wife—Mahalath, the daughter of Ishmael, Abraham's son, the sister of Nebaioth.
Compare with other 3 random translations
NCV Genesis 28:9Now Esau already had wives, but he went to Ishmael son of Abraham, and he married Mahalath, Ishmael’s daughter. Mahalath was the sister of Nebaioth.Jacob’s Dream at Bethel
EAS Genesis 28:9So Esau went to visit Abraham's son, Ishmael. He married Ishmael's daughter, Mahalath, the sister of Nebaioth. When Esau married Mahalath, he kept his Canaanite wives as well.
YLT Genesis 28:9and Esau goeth unto Ishmael, and taketh Mahalath, daughter of Ishmael, Abraham's son, sister of Nebajoth, unto his wives, to himself, for a wife.