Genesis 36:16

Overview - Genesis 36
Esau's three wives.
His removal to mount Seir.
His sons.
15 The dukes which descended of his sons.
20 The sons and dukes of Seir the Horite.
24 Anah finds mules.
31 The kings of Edom.
40 The dukes that descended of Esau.
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Genesis 36:16  (King James Version)
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.

Duke Korah
As it is certain from ver. 4, that Eliphaz was Esau's son by Adah, and from ver. 11, 12, that Eliphaz had but six sons, "Teman, Omar, Zepho, Gatam, Kenaz, and Amalek;" as is is also
certain, from ver. 5, 14, that Korah was the son of Esau (not Eliphaz) by Aholibamah; and as the words duke Korah are omitted by both the Samaritan Text and Version, Dr. Kennicott pronounces them to be an interpolation.* dukes.
Ex 15:15