Jerome of Stridon
Esau, Edom, and Seir all refer to a single individual. The reason for his multiple names is elaborated upon earlier. The subsequent discussion continues.
These are the sons of Esau, and these the dukes of them: the same is Edom.
אֵ֧לֶּה בְנֵי־עֵשָׂ֛ו וְאֵ֥לֶּה אַלּוּפֵיהֶ֖ם ה֥וּא אֱדֽוֹם׃
One Church Father comments on this verse
Esau, Edom, and Seir all refer to a single individual. The reason for his multiple names is elaborated upon earlier. The subsequent discussion continues.