1 Chronicles 1:32-33

The sons of Keturah, Abraham’s concubine, whom she bore, were Zimran, Jokshan, Medan, Midian, Ishbak and Shuah. And the sons of Jokshan were Sheba and Dedan. The sons of Midian were Ephah, Epher, Hanoch, Abida and Eldaah. All these were the sons of Keturah.