In Scotland I have never met or heard of anyone named Brígh,
Bree or Brie. Actually I suspect
Bree and Brie are American inventions, perhaps Irish inspired. I do know a woman named Breege, which could conceivably be Anglicised from
Brigh but I think it's more likely connected to
Brigid.
Certainly the (Irish Gaelic) meaning given on this site for Brígh is correct, because I know the Scottish Gaelic brìgh has roughly the same meaning.
♥
Elinor♥