BRENNUS, ENEMY OF ROME (1963)

The film depicts the Gallic invasion of Italy and the capture of all of Rome except Capitoline Hills, which was saved by a gaggle of geese, whose honking warned its Roman defenders from a sneak assault by the Celts. The Romans got them to withdraw form the rest of Rome by negotiating a humiliating peace with a large indemnity. The Gauls were said to be led by Brennus, which may be his title of BRAN or BREN, which means king.