Only to the family They were not confined to any particular person, but might have their choice among such as solicited their consent, who were descended from the same stock. But they were restrained from marrying men of another tribe or of another family of the same tribe; for God would have the inheritance of families, as well as of tribes, kept entire and distinct. And accordingly they actually did marry their cousin-germans, Numbers 36:11.
Related Commentaries of Numbers 36:6
Numbers 36:6
6 This is the thing which the LORD doth command concerning the daughters of Zelophehad, saying, Let them marrya to whom they think best; only to the family of the tribe of their father shall they marry.