Most of what you named are North Europeans, which is what we are as Anglo-Saxons.
As for Spanish, that i would argue with as they mixed almost exclusivly with the Celts, not us. You only have to look at Roy Keene or Tom Jones, you can see the influence in them as example. Much of it is said to go back to the fleeing Spanish armada, with their ships wrecking and the sailors finding refuge among the Celts of Scotland and Ireland.
If you can trace your family line back a few generations, any alien blood is diluted after, i think its 5 generations, your great,great grandfather basically.
The below probably explains things better as to England.....
About 450AD. came the landing in Celtic Britain of two warrior traders, Hengest and Horsa who, together with their Saxon, Angle and Jutish followers are traditionally regarded as the founders of England. History records that the White Dragon was their emblem. During the next four centuries, the Saxon, Angle and Jutish settlers; originally from North Germany, Denmark, Jutland and Norway, who, together with the Northmen or Vikings, would become known collectively as the English, advanced from East to West through Celtic Britain.
Various accounts of the times record many battles between armies carrying the Celtic British Red Dragon Banner (now the Welsh Dragon) and the White Dragon Flag of the Saxons, Angles and Jutes (the English Dragon). The White Dragon was, and still is, the emblem of Wessex, the territory of the West Saxons and the English King, Alfred the Great.
