How do we reconcile the fact that Korach is listed here among the children of Esav's wife Aholivamah, whereas in 36:16, it refers to him as one of the chieftains of Elifaz?
Rashi and Ramban (to 36:12): Korach was a Mamzer 1 , since he was the product of Elifaz and Aholivamah, his father's wife.
Riva, from Rashi to Sotah 13a: There were two Korachs, one from Aholivamah and one from Elifaz. 2
Moshav Zekenim (to 36:18): The chieftain of Elifaz named Korach was a grandson of Elifaz. He himself became the head of a family (so he is listed among Alufei Elifaz).
Meshech Chachmah (19:37): Mamzerus blemishes the nature of the descendants, even among Bnei Noach, for whom there is no [Isur of] Mamzerus. This persists even today! (Male Amoni and Mo
