Exodus 6:21
The sons of Izhar were Korah, Nepheg, and Zikri.
Numbers 16:1
Now Korah son of Izhar, the son of Kohath, the son of Levi, and Dathan and Abiram, the sons of Eliab, and On son of Peleth, who were Reubenites, took men
1 Chronicles 6:37-38
son of Tahath, son of Assir, son of Ebiasaph, son of Korah,
Exodus 6:24
The sons of Korah were Assir, Elkanah, and Abiasaph. These were the Korahite clans.
Numbers 16:32
and the earth opened its mouth and swallowed them, along with their households, and all Korah's men, and all their goods.
Numbers 26:10-11
The earth opened its mouth and swallowed them and Korah at the time that company died, when the fire consumed 250 men. So they became a warning.