Jokshan: Son of Abraham, by Keturah
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Genesis 25:2, 3, 6
and she bore him Zimran, Jokshan, Medan, Midian, Ishbak, and Shuah. / Jokshan was the father of Sheba and Dedan. And the sons of Dedan were the Asshurites, the Letushites, and the Leummites. / But while he was still alive, Abraham gave gifts to the sons of his concubines and sent them away from his son Isaac to the land of the east.
1 Chronicles 1:32
The sons born to Keturah, Abraham’s concubine: Zimran, Jokshan, Medan, Midian, Ishbak, and Shuah. The sons of Jokshan: Sheba and Dedan.