Joktan

Little, the second of the two sons of Eber (Gen. 10:25; 1 Chr. 1:19). There is an Arab tradition that Joktan (Arab. Kahtan) was the progenitor of all the purest tribes of Central and Southern Arabia.

M.G. Easton M.A., D.D., Illustrated Bible Dictionary, Third Edition
Parents: Eber
Children: Diklah, Hazarmaveth, Abimael, Hadoram, Uzal, Ophir, Jerah, Ebal, Jobab, Havilah, Sheba, Almodad