Naham is unknown.
Keilah is a town in the Shephelah (Joshua 15:44), well known as the scene of David's prowess and peril (1 Samuel 23).
Eshtemoa occurred in 1 Chronicles 4:17, in connexion with Ishbah, son of Ezra by Bithiah. (See Note there.) The Garmites and Maachathites are unknown clans. The former founded or were settled at Keilah. It appears that abi ("father of") has dropped out of the text before Eshtemoa; the sense being that the Maachathites were settled at Eshtemoa; which, of course, they may have been, side by side with the half-Egyptian clan Ishbah. Maachah is mentioned, 1 Chronicles 2:48, as a concubine of Caleb. The list is still dealing with the Calebite division of Hezron.
the sister of Naham; or rather Achotnaham, we render the sister of Naham, is the name of the first son of Hodiah, as some think (e):
the father of Keilah the Garmite; prince of the city of Keilah, in the tribe of Judah, Joshua 15:44 who sprung from the family of Garmi:
and Eshtemoa the Maachathite; the father or prince of the inhabitants of Eshtemoa, another city in the same tribe, see 1 Chronicles 4:17 who sprung from Maachah, see 1 Chronicles 2:48.
(c) Onomastic. Sacr. p. 836. (d) Michaelis in loc. (e) Beckii Not. in Targ. 1 Chron. 19.