Genesis 36:13

And these are the sons of Reuel; Nahath, and Zerah, Shammah, and Mizzah: these were the sons of Bashemath Esau’s wife.

Cross-reference

Both enumerate Reuel's sons — 36:13 names them as individuals, 36:17 lists them as chiefs — the same family in the genealogy's dual framing.

Genesis 26:34 first introduces Esau's marriages. Reuel descends from one of these unions, connecting this chief to Esau's earliest marital choices.

1 Chronicles 1:37 repeats Reuel's sons from this same Edomite genealogy — the Chronicler preserves the exact list from Genesis 36.