Shema was the father of Raham the father of Jorkeam, and Rekem was the father of Shammai.
The persons mentioned in the former paragraph are most of them such as we read of, and most of them such as we read much of, in other scriptures; but very few of those to whom this paragraph relates are mentioned any where else.
Commenting on 1 Chronicles 2:18-55
Salma the father of Bethlehem,.... Or prince of Bethlehem, as the Targum; not the same as in Ch1 2:11 he was the son of Nahshon, this of the younger Caleb: Hareph, the father of Bethgader; prince of a place of that name called Gedor, Ch1 4:4, and where this man's name is Penuel; Gedor was in the tribe of Judah, Jos 15:58.
POSTERITY OF CALEB. (1Ch. 2:18-55) Caleb the son of Hezron--The notices concerning this person appear confused in our version. In Ch1 2:19 he is said to be the father of Hur, whereas in Ch1 2:50 he is called "the son of Hur." The words in this latter passage have been transposed in the copying, and should be read thus, "Hur the son of Caleb." begat...
Commenting on 1 Chronicles 2:18-55