England circa 878

British kingdoms circa 800

Britain circa 600

Let's go viking

The Old Norse feminine noun víking refers to an expedition overseas. It occurs in Viking Age runic inscriptions and in later medieval writings in set expressions such as the phrasal verb fara í víking "to go on an expedition". In later texts such as the Icelandic sagas, the phrase "to go viking" implies participation in raiding activity or piracy, and not simply seaborne missions of trade and commerce. The related Old Norse masculine noun víkingr appears in Viking Age skaldic poetry and on several rune stones found in Scandinavia, where it refers to a seaman or warrior who takes part in an expedition overseas.^[4] The form also occurs as a personal name on some Swedish rune stones. There is little indication of any negative connotation in the term before the end of the Viking Age. Regardless of its possible origins, the word was used to indicate an activity and those who participated in it, and it did not belong to any ethnic or cultural group.<sup>[5]

http://en.wikipedia.org/wiki/Viking</sup>

Invasion 400 to 800

A map that give a better idea where the invaders came from. Apparently the language that is nearest to English is Frisian in the Saxon belt on the map.