Genesis 25:1-2, 4
Genesis 25:1-2 NKJV
Abraham again took a wife, and her name was Keturah. And she bore him Zimran, Jokshan, Medan, Midian, Ishbak, and Shuah.
Genesis 25:4 NKJV
And the sons of Midian were Ephah, Epher, Hanoch, Abidah, and Eldaah. All these were the children of Keturah.