second: i.e. second son of Manasseh. Machir being the first.
daughters. Not sons (Numbers 27:1).
Related Commentaries of 1 Chronicles 7:15
1 Chronicles 7:15
15 And Machir took to wife the sister of Huppim and Shuppim, whose sister's name was Maachah;) and the name of the second was Zelophehad: and Zelophehad had daughters.