Duke Korah,.... Only among the sons of Eliphaz is reckoned Duke Korah, not before mentioned among his sons, and is left out in the Samaritan version; See Gill on "Ge 36:7"; to which it may be added, that according to Gerundinsis , this is the same with Timna, related among the sons of Eliphaz, 1Ch 1:36; who was called by his father Korah: or this might be a grandson of Eliphaz.
Apud Menaasseh ut supra. (conciliator in Gen. Quaest. 57. p. 81.