Family name origins & meanings
- French : habitational name from either of two places called Brignac, in Corrèze and Hénault. Both are named with Roman personal names (Brinnius and a reduced form of Aprionus respectively) + the suffix -acus, denoting ownership.
- The Brignac families of LA are descended from three brothers from the Mobile area, whose father, Jacques-Simon Brignac, had been a soldier at Fort Toulouse, AL. His birthplace in France is unknown. The surname is rare outside LA.