Early settlers around Louisville found quite a bit of evidence they considered Welsh, especially that it was used as a kind of diplomatic and "educated" lingua-franca by the various Indian tribes, much like the Europeans then used Latin.
Several stone forts atop mountains in Georgia, Alabama, and Tennessee that obviously were desperate attempts at defence by some outnumbered European people, plus Cherokee and other legends suggesting that they had to overcome a scattered white (blue) eyed people en route from the Gulf Coast area to their home in the southern Mountains, migration circa 650-720 AD...
Celtic inscriptions dated to the 480-720 AD era are atop several mountains in West Virginia.
Assuming the inscriptions were in stone, how is such close dating done with no radio carbon, decomposition or similar things to place it in time?
PRINCE MADOC AB OWAIN (12th century) and Prince Madoc ap Meurig,(Mentioned in article)
Were they using maps from the Viking AAA? {ggg}.
Their theory is based on an earlier Madoc being the one that legends were about. They are also keen Arthurian researchers.
The Madoc legend was revived by Dr. Jon Dee to support British claims to America and dispute the Spanish claim in the time of Elizabeth I but there is much confusion over the literary references he used to establish this claim.