Wow
Khazaria - they are the Jews ?
Your map of the British Isles is fascinating. I don't know Wicria by its name, though I do recall that something in the Gloucestershire area retained a late autonomy. Mercia by this time has swallowed up Lindsey and Essex Middlesex. This is not long before the first Danish raiders appear on the scene I am thinking, though a few decades before that becomes settlement. One might wish one's brain had a photographic recall of facts - the 800s were a century I used to feel I knew everything about in England !
Best Regards
Grey Wolf