1º_ Britannia was the name of the Roman province south of Albion Island, which in English is known as Britania and today is the island of Great Britain. The origin of these terms is in the Breton people, who inhabited it until the Anglo-Saxon invasion in the fifth century. See catfish . 2º_ It is also a name for the "metal of Britain", an alloy of tin (93%), antimony (5%) and copper (2%). 3º_ It is the name of novels, series, music bands, . . .