Looking at what evidence had already been gathered by others, we were stimulated to find out what remained on the map of placenames of the old British kingdom of Dumnonia in south west Britain, which roughly covered present day Cornwall, Devon and Somerset between 500-700AD.
We homed in on Bath and found its original English and Welsh spellings reflected its placename pronounciation, which affects how you view the famous battle site, Badon. of c.519.
See more about this on our website, Badon and the Frontier Zone, meanwhile here is the first page, which shows our discussion of this kind of placename analysis, in this context and on this subject, was the original.
We had lost this article completely until last Thursday when we discovered it on the internet and held in five libraries in Somerset. I had also forgotten that my name was temporarily Bennett in those days! It was published in Popular Archaeology, April 1985, from Manchester University, ed. Prof. Barri Jones.