a re-spelling of the name of a particular valley in France from the 1600's that once housed a small duke's citadel before becomeing entirely flooded in a messed up attempt to build a moat around the place.
Also, a uncommon name given to girls of French descent.
Person #1: So, where'd your parents come from?
Person #2: Bryonne.
Person #1: What? Where's that?
Person #2: France.
Person #1: Oh.