Genesis 25:4-6

Young's Literal Translation

⁴ and the sons of Midian [are] Ephah, and Epher, and Hanoch, and Abidah, and Eldaah: all these [are] sons of Keturah.

⁵ And Abraham giveth all that he hath to Isaac;

⁶ and to the sons of the concubines whom Abraham hath, Abraham hath given gifts, and sendeth them away from Isaac his son (in his being yet alive) eastward, unto the east country.