So, there are the proto-English ~ living in the Swamps in 700 BC ~ beating each other over the head, swinging bronze swords, drowning victims ~ all the good stuff.
1200 years later they were a bit more advanced ~ then King Ad gave away the farm ~ OUR FARM ~ not his own farm, but ours.
Within about 100 years they too were Christianized and were much less nasty. In fact, they took over leadership of THE CHURCH and managed to spread their own language(s) into a dominant position that wasn't challenged until 1066!
Once the cultural conquest was made all the bitter clingers who demanded their own rites in their own versions of latin were readily turned into what became Englishmen. The real Britons lived on in Ireland, Alba, Brittany, Manx, etc.
True enough the genes are only little removed from each other, but there are always two different versions of the history! Ours and theirs. Ours is better ~ and much more entertaining really.
Rotsaruck straightening them out next weekend.