(Timna was a concubine of Eliphaz, Esau’s son; she bore Amalek to Eliphaz.) These are the sons of Adah, Esau’s wife.
Observe here, 1. That only the names of Esau's sons and grandsons are recorded, only their names, not their history; for it is the church that Moses preserves the records of, not the record of those that are without. Those elders that lived by faith alone obtained a good report. It is Sion that produces men of renown, not Seir, Psa 87:5.
Commenting on Genesis 36:9-19
And these are the sons of Reuel,.... Another son of Esau's; this man had four sons, as follow: Nahath, and Zerah, Shammah and Mizzah: of whom we know no more than their names, unless Maps or Massa, which Ptolemy (z) places in Idumea, should have its name from Mizzah: these were the sons of Bashemath, Esau's wife; her grandsons, as before. (z) Geograph. l. 5. c. 16.
Timna was concubine to Eliphaz - As Timna was sister to Lotan the Horite, Gen 36:22, we see how the family of Esau and the Horites got intermixed. This might give the sons of Esau a pretext to seize the land, and expel the ancient inhabitants, as we find they did, Deu 2:12.