Exodus 6:18-22

And the sons of Kohath: Amram, Izhar, Hebron, and Uzziel; and the length of Kohath’s life was 133 years.

And the sons of Merari: Mahli and Mushi. These are the families of the Levites according to their generations.

Now Amram married his father’s sister Jochebed, and she bore him Aaron and Moses; and the length of Amram’s life was 137 years.

And the sons of Izhar: Korah, Nepheg, and Zichri.

And the sons of Uzziel: Mishael, Elzaphan, and Sithri.