Numbers 26:58

These are the families of the Levites: the family of the Libnites, which belonged to the Gershonites, the family of the Hebronites, which belonged to the Kohathites, the family of the Mahlites, the family of the Mushites, both of which belonged to the Merarites, the family of the Korathites, which belonged to the Kohathites. And Kohath begat Amram.