Concise Bible Dictionary:
Families descended from Shobal and Salina, sons of Caleb (1 Chron. 2:52, 54). The Hebrew is different in the two verses; in 1 Chronicles 2:52 The RV has “Menuhoth.” Mr. Darby treats “half of” as part of the proper name, giving Hazi-Hammenuhoth in 1 Chronicles 2:52, and Hazi-Hammanahethites in 1 Chronicles 2:54.
Jackson’s Dictionary of Scripture Proper Names:
feminine plural of gentilic of Manahath (1 Chron. 2:52) : patronymic of Manahath