John Gill Commentary 1 Chronicles 1:35

"The sons of Esau: Eliphaz, Reuel, and Jeush, and Jalam, and Korah." — 1 Chronicles 1:35 (ASV)

Ver. 35-37. The sons of Esau

The firstborn of Isaac; his posterity are named in this and the two following verses, as in (Genesis 36:1–6) only it should be observed, that Timna, (1 Chronicles 1:36) is not the name of a man, but was the concubine of Eliphaz, the eldest son of Esau, and the mother of Amalek, (Genesis 36:12) , and so in the Arabic version it is read, ``and Timna, which was the concubine of Eliphaz, the son of Esau, bare him Amalek;'' and so the Alexandrian copy of the Septuagint.