(Origin Scottish Locality). A burn, in Scotland, is a small stream, the same as Bourne. Biorn, in the Danish and Swedish, signifies a bear, figuratively, a ferocious, valiant man.
Source: An Etymological Dictionary of Family and Christian Names With an Essay on their Derivation and Import; Arthur, William, M.A.; New York, NY: Sheldon, Blake, Bleeker & CO., 1857.
My name isn't even Irish yet I'm 50%.
Madness.