Numbers 3:6

Aaron : a son of Amram; brother of Moses,son of Amram (Kohath Levi); patriarch of Israel's priests,the clan or priestly line founded by Aaron

Levi : members of the tribe of Levi

Numbers 4:2

Kohath : son of Levi; founder of the clan of Kohath,the clan of Kohath

Levi : members of the tribe of Levi

Numbers 16:10

Korah : a man who led a rebellion against Moses and Aaron.,son of Esau and Oholibamah,son of Eliphaz son of Esau,son of Izhar son of Kohath son of Levi,son of Hebron of Judah,son of Izhar (Amminadab) son of Kohath son of Levi

Levi : members of the tribe of Levi