Jamieson, Fausset and Brown on 1 Chronicles 1:29

29. These are their generations--the heads of his twelve tribes. The great northern desert of Arabia, including the entire neck, was colonized by these tribes; and if we can recover, in the modern geography of this part of the country, Arab tribes bearing the names of those patriarchs, that is, names corresponding with those preserved in the original catalogue of Scripture, we obtain at once so many evidences, not of mere similarity, but of absolute identification [Forster].

Nebaioth--gave rise to the Nabathæans of the classic, and the Beni Nabat of Oriental writers.

Kedar--the Arab tribe, El Khedeyre, on the coast of Hedgar.

Abdeel--Abdilla, the name of a tribe in Yemen.