Timnah - A frontier town of the Philistines; it was in this place that Samson got his wife, see Judges 14:1-15:20.

Cain,.... Cain, or Hakain, "that Cain", we nowhere else read of; whether the name was given it by the old Canaanites, in memory of Cain, the son of Adam, is not certain:
Gibeah; there were other places that went by the name of Gibeah; there was a Gibeah in Benjamin, Judges 20:4, and another in the same tribe called Gibeah of Saul, 1-Samuel 11:4, to distinguish it from that; but this was in the tribe of Judah. Masius conjectures it is the same with that in 1-Samuel 23:19 which was near Ziph; and not amiss. Jerom (u) makes mention of Gabaha and Gabatha, little villages to the east of Daroma; and of another Gabatha, near Bethlehem, in the tribe of Judah; but whether either of these are meant it is doubtful:
Timnah, of this city; see Gill on Joshua 15:10,
ten cities with their villages; the number agrees with the names of them.
(u) Ut supra, (De loc. Hebrews.) fol. 92. C.

Cain (Hakkain) is possibly the same as Jukin, on the south-east of Hebron (Rob. ii. p. 449). Gibeah cannot be the Gabatha near Bethlehem, mentioned in the Onom. (s. v. Gabathaon), or the Gibea mentioned by Robinson (ii. p. 327), i.e., the village of Jeba, on a hill in the Wady el Musurr, as this does not come within the limits of the present group; it must rather be one of the two places (Gebaa and Gebatha) described as viculi contra orientalem plagam Daromae, though their situation has not yet been discovered. Timnah, probably the place already mentioned in Genesis 38:12., has not been discovered.