SEPT n.
A clan, tribe, or family, proceeding from a common progenitor; -- used especially of the ancient clans in Ireland. The chief, struck by the illustration, asked at once to be baptized, and all his sept followed his example. S. Lover.
TRIBE n. 2 definitions
A family, race, or series of generations, descending from the same progenitor, and kept distinct, as in the case of the twelve tribes of Israel, descended from the twelve sons of Jacob. "The Lion of the tribe of Juda." Rev. v. 5. A wealthy Hebrew of my tribe. Shak.