Matthew Poole and continuators on Genesis 26:34

34. 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 .

Both Hittites, the worst of the Canaanites, Ezek. 16. 3. Which from his Grand-father Abrahams severe charge, Gen. 24. 3. he must needs know would be highly displeasing both to God and to his Parents. And as Esau had several names, being called also Edom and Seir, so it seems these women and their Parents had, by comparing this with Gen. 36. 2. which was usual in those times and places. Or Esau had more Wives then these.