Joktan

Joktan Eber second son brother to Peleg and ggggrandson to Noah

Gen 10:25  And unto Eber were born two sons: the name of one was Peleg; for in his days was the earth divided; and his brother's name was Joktan. 

Gen 10:26  And Joktan begat Almodad, and Sheleph, and Hazarmaveth, and Jerah, 

Gen 10:29  And Ophir, and Havilah, and Jobab: all these were the sons of Joktan.

 1Ch 1:19  And unto Eber were born two sons: the name of the one was Peleg; because in his days the earth was divided: and his brother's name was Joktan. 

1Ch 1:20  And Joktan begat Almodad, and Sheleph, and Hazarmaveth, and Jerah, 

1Ch 1:23  And Ophir, and Havilah, and Jobab. All these were the sons of Joktan.