This Bible contradiction is from the Skeptic's Annotated Bible.
Elon the Hittite.
Genesis 26:34 View context
And Esau was forty years old when he took to wife Judith the daughter of Beeri the Hittite, and Bashemath the daughter of Elon the Hittite:
Genesis 36:2-3 View context
Esau took his wives of the daughters of Canaan; Adah the daughter of Elon the Hittite, and Aholibamah the daughter of Anah the daughter of Zibeon the Hivite;
And Bashemath Ishmael's daughter, sister of Nebajoth.