Numbers 3:27

And of Kohath [was] the family of the Amramites
So called from Amram, the first son of Kohath, and father of Aaron and Moses; so that Moses and Aaron, and their children, are included in this family:

and the family of Izeharites;
of which family was Korah, ( Numbers 16:1 ) ;

and the family of the Hebronites, and the family of the Uzzielites;
which four families had their names from Kohath's four sons, ( Numbers 3:19 ) ;

these are the families of the Kohathites;
which were as many as both the other sons of Levi.