TSK · Numbers 16:1

Now these are the names of the sons of Levi, according to their records: Gershon, Kohath, and Merari.(The length of Levi’s life was 137 years.)

The sons of Izhar were Korah, Nepheg, and Zikri.

“Our father died in the wilderness, although he was not part of the company of those that gathered themselves together against the LORD in the company of Korah, but he died for his own sin, and he had no sons.

Reuben’s Descendants The sons of Reuben, Israel’s firstborn–(Now he was the firstborn, but when he defiled his father’s bed, his rights as firstborn were given to the sons of Joseph, Israel’s son. So Reuben is not listed as firstborn in the genealogical records.