Francis John Haverfield, 1911 Encyclopædia Britannica, Volume 4… (1911)
“ It seems that the Saxons though apparently unable to maintain their hold so far to the west, were able to prevent the natives from recovering the lowlands. Thus driven from the centres of Romanized life, from the region of walled cities and civilized houses, into the hills of Wales and the north-west, the provincials underwent an intelligible change. The Celtic element, never quite extinct in those hills and, like most forms of barbarism, reasserting itself in this wild age—not without reinforcement from Ireland—challenged the remnants of Roman civilization and in the end absorbed them. ”
