Sithri
Sithri was a son of Uzziel listed in the Levitical genealogy recorded in Exodus 6. UPDV records at Exodus 6:22: "And the sons of Uzziel: Mishael, and Elzaphan, and Sithri."
Uzziel was a son of Kohath, making Sithri a grandson of Kohath and a descendant of Levi. Sithri is named last among Uzziel's three sons and does not appear elsewhere in UPDV.