Definitions for "Sept"
A clan, tribe, or family, proceeding from a common progenitor; -- used especially of the ancient clans in Ireland.
an Irish variant of "clan", used to denote a branch of a clan known by a different surname than that of the clan chief or progenitor (the clan name)
A branch of a clan or a family who sought protection of a clan
referring to the number seven ("septangularia" = "seven-angled")