Jokshan was the father of Sheba and Dedan. And the sons of Dedan were the Asshurites, the Letushites, and the Leummites.
Jewish Publication Society of America Version (JPS1917) - Genesis 25:3 >And Jokshan begot Sheba, and Dedan. And the sons of Dedan were Asshurim, and Letushim, and Leummim.