I know that, in my ignorance, I mentioned in another related thread that I believed your theory was acceptable if it had been gone-over by a linguistics expert. Sir, if you are that linguistics expert then I surely owe you an apology. I was pre-occupied with the trees and didn't see the forest that I was standing in. :-)
I admit to having difficulties understanding what I call "Linguistical Diffusionism" (for lack of a better term). I read a great deal but my main body of reading consists of topics other than languages of The Dark Ages. This is certainly not due to lack of interest. I simply don't have any books on the subject. However, I did read a book about 15 years ago (I can't remember the title or author) that discussed in one of its chapters that during the supposed Arthurian Period there was a language called Cymri that was being spoken around Londonium. I don't believe that it was a written language. Could you please tell me what you know on this language? Did it actually exist? If it did, then was it a written language? etc., etc. I would greatly appreciate your knowledge.
BTW: I have not purchased your book yet. However, very soon I will. I find the topic fascinating and want to learn more. I know that in another thread I asked Ishmael about the discount. In truth, the discount means nothing to me. So if I don't purchase your book during the limited time discount, I will surely purchase it anyway. However, it seems that I won't be able to acquire a copy before the close of this discussion. Bummer!
Have a good one!