Gatam

Gatam son to Eliphaz and grandson to Esau

Gen 36:11  And the sons of Eliphaz were Teman, Omar, Zepho, and Gatam, and Kenaz. 

Gen 36:16  Duke Korah, duke Gatam, and duke Amalek: these are the dukes that came of Eliphaz in the land of Edom; these were the sons of Adah. 

1Ch 1:36  The sons of Eliphaz; Teman, and Omar, Zephi, and Gatam, Kenaz, and Timna, and Amalek.