Esau

At the age of forty years, to the great grief of his parents, he married (Genesis 26:34,35 ) two Canaanitish maidens, Judith, the daughter of Beeri, and Bashemath, the daughter of Elon. When Jacob was sent away to Padan-aram, Esau tried to conciliate his parents (Genesis 28:8,9 ) by marrying his cousin Mahalath, the daughter of Ishmael. This led him to cast in his lot with the Ishmaelite tribes; and driving the Horites out of Mount Seir, he settled in that region. After some thirty years' sojourn in Padan-aram Jacob returned to Canaan, and was reconciled to Esau, who went forth to meet him (33:4). Twenty years after this, Isaac their father died, when the two brothers met, probably for the last time, beside his grave (35:29). Esau now permanently left Canaan, and established himself as a powerful and wealthy chief in the land of Edom (q.v.).

Long after this, when the descendants of Jacob came out of Egypt, the Edomites remembered the old quarrel between the brothers, and with fierce hatred they warred against Israel.