Genesis 25:1-6

Abraham married again, and his new wife was Keturah. She gave birth to Zimran, Jokshan, Medan, Midian, Ishbak, and Shuah. Jokshan was the father of Sheba and Dedan. Dedan’s descendants were the people of Assyria, Letush, and Leum. The sons of Midian were Ephah, Epher, Hanoch, Abida, and Eldaah. All these were descendants of Keturah. Abraham left everything he owned to Isaac. But before Abraham died, he did give gifts to the sons of his other wives, then sent them to the East to be away from Isaac.