The transformation of Roman Britain

[Robert Vermaat]

So with all those 'Wall' names; walloons, welsh, walachians, valais; it seems an awful lot of people did not find the germanic culture very attractive at all. Then there are the Slavs who managed to resist -- not to mention a large group of the ancestors of the Spanish, modern day French, Italians, etc, etc. All these groups had powerful germanic neighbours -- sometimes as elites in charge. Strange that they didn't see the 'obvious' benefits of converting to a new prestige language.
Perhaps the Anglo-Saxons were just better teachers? I wonderl

Well, it's either that or the British were the only post-Roman society that got wiped out or bred out by a Germanic minority.
Personally I see the solution as sketched above, that the real impact of English only happened after more than two centuries after Britain was lost to Rome.

The Slavs, btw, not only managed to resist but took over large territories of once Germanic-settled lands, almost all of eastern Europe and the aestern Alps.
The Franks seem to have been more eager to continue the Latin culture than some former Roman provincials, if you believe some of Sidonius Appolinaris' suggestions. Maybe it was also that - in Italy, Spain, Gaul, the new Germanic peoples wanted to continue the Roman culture, not surprising as the had lived inside the Empire for some time before being able to take over. For the Saxons, that was very different.