The document discusses various names used to refer to parts of Britain and Ireland. It explains that Britannia refers to the Roman province and is depicted as a female figure holding a trident. Albion is a poetic name for England, Scotland, or Britain that comes from a Celtic word. Erin is a poetic name for Ireland, evoking its green landscape. The Roman names for Scotland, Wales and Ireland were Caledonia, Cambria, and Hibernia respectively.