Keil & Delitzsch, on 1Chr 2:42

“Now the sons of Caleb the brother of Jerameel were Mesa his firstborn, who was the father of Siph: and the sons of Maresa father of Hebron.”

“She bare also Shaaph the father of Madmannah,.... Prince of a place so called, in the tribe of Judah, Jos 15:31. Sheva the father of Machbenah, and the father of Gibeah; prince of two cities of those names in the same tribe; of the latter see Jos 15:57, and the daughter of Caleb was Achsah; Caleb, the son of Jephunneh, had a daughter of this name, but neither he nor she are here meant, Jos 15:16 but by whom Caleb, the son of Hezron, had this daughter, is not said; perhaps by Maachah his concubine last mentioned.”

Imported from an open dataset — not yet checked against the printed edition.