1 Chronicles 6:20

Gershom : the clan of Gershom/Gershon of the tribe of Levi

Jahath : son of Reaiah of Judah,son of Libni of Gershom son of Levi,firstborn son of Shimei son of Gershon son of Levi,chief of Shelomoth and Izhar clans (Kohath Levi) under David,a Merari Levite overseer of temple repairs under Josiah

Libni : son of Gershom son of Levi,son of Mahli son of Merari son of Levi

Zimmah : son of Jahath of Gershom son of Levi,son of Shimei of Gershom of Levi; ancestor of Asaph,father of Joah (Gershon Levi), a temple cleaner under Hezekiah