Joktan
The name Joktan means “small dispute; contention; disgust”.
Easton's Bible Dictionary 1897
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.
Smith's Bible Dictionary 1863
(small), son of Eber, (Genesis 10:25; 1 Chronicles 1:19) and the father of the Joktanite Arabs. (Genesis 10:30) (B.C. about 2200.)