“The Angles were long forgotten.”
For long forgotten people, they did remarkably well, having a major country named after them, not to mention a language as well.
“Forgotten” was certainly a poor choice of words on my part. But by 900 England was a Saxon country still for the most part dominated by a hyper aggressive set of Scandinavian (Danish Vikings) overlords. The successors to Alfred were able to finally drive the last of the Norse out of England but only finished the job a couple weeks before they faced and were defeated by the Normans at the opposite end of the country at Hastings. But the name Anglo Saxon and their (Germanic) contribution to the evolution of the English language definitely stuck.