Brien
Brien meaning: Variant of Brian: Brave, Virtuous.
Brien origin: Celtic
Brien gender: Male

Brienna
Brienna meaning: Strong, she ascends. Feminine form of Brian.
Brienna origin: Celtic
Brienna gender: Female

Brienne
Brienne meaning: Strong, she ascends. Feminine form of Brian.
Brienne origin: Celtic
Brienne gender: Female