I Chronicles 6:22, 33, 37-38

The sons of Kohath were Amminadab his son, Korah his son, Assir his son

And these are the ones who ministered with their sons: Of the sons of the Kohathites were Heman the singer, the son of Joel, the son of Samuel

the son of Tahath, the son of Assir, the son of Ebiasaph, the son of Korah, the son of Izhar, the son of Kohath, the son of Levi, the son of Israel.