[Saurreg]

According to Bulfinch's Mythology there were at least three origins to the start of mythical England. Two of them were associated with the the classical era and one has its source from Judaism.

Of the two classical myths, the first proposed that the island derived its name from Albion, the son of Neptune (Poisedon) who ruled over the island and was slain by Hercules (Herackles). The second myth had a Trojan refugee by the name of Brutus who sailed all the way from Anatolia to the island and became the founding father of the British (if that is even possible). That leaves us with the third variant which, stated that Japhet, son of Noah had an offspring called Histion (history) who beget four children and one of them was named Britto (Britain) who was the great progenitor of a people that would bear his name. How original!

So it would seem that England is deprived of a root for myths that are exclusive to it and it alone. Can't fault Tolkien for wanting to find something somewhat more "original".