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 Genesis 36:7); to which it may be added, that according to Gerundinsis F1, this is the same with Timna, related among the sons of Eliphaz, ( 1 Chronicles 1:36 ) ; who was called by his father Korah: or this might be a grandson of Eliphaz.
F1 Apud Menaasseh ut supra. (conciliator in Gen. Quaest. 57. p. 81.)