Matthew Henry Presbyterian @wholebiblehenry

We may observe in these verses, 1. That here is a whole family of craftsmen, handicraft tradesmen, that applied themselves to all sorts of manufactures, in which they were ingenious and industrious above their neighbours, Ch1 4:14. There was a valley where they lived which was, from them, called the valley of craftsmen. Those that are craftsmen are not therefore to be looked upon as mean men.

Commenting on 1 Chronicles 4:11-23

John Gill Reformed Baptist @doctorgill

And the sons of Caleb the son of Jephunneh,.... Jephunneh is not the same with Hezron, as the Targum, but another son of Kenaz, hence called the Kenezite, Jos 14:6 and brother of Othniel; and Caleb his son is the same that was sent one of the spies of the land of Canaan by Moses, see Num 13:6.

Geneva Bible Notes Reformed @genevanotes

And the sons of Caleb the son of Jephunneh; Iru, Elah, and Naam: and the sons of Elah, even Kenaz. (f) Called also Esrom.