The good old internet comes up with.
Albion, the earliest-known name for the island of Britain. It was used by ancient Greek geographers from the 4th century bc and even earlier, who distinguished “Albion” from Ierne (Ireland) and from smaller members of the British Isles. The Greeks and Romans probably received the name from the Gauls or the Celts.
Albion incorporated as a village in 1855 and as a city in 1885.
Albion is an alternative name for the island of Great Britain. It is sometimes used poetically to refer to the island, but has fallen out of common use in English. ... These names were later Latinised as Albania and Anglicised as Albany, which were once alternative names for Scotland.
Merlin. Albion is a landmass that constitutes the island currently known as Great Britain. Once, the land of Albion was united in an age of peace, during which all of its inhabitants followed the Old Religion. Now there are many kingdoms within Albion, between which peace is exceedingly rare.
And the football reference.
The word Albion was originally used to mean Britain, then only for parts of Britain with white cliffs. The name was first applied to a football team by Brighton and Hove as there are white cliffs in Dover. The name was later copied by other teams, eg. West Bromwich