King Brutus, Lemnos stele written in the ancient Coelbren alphabet
Free Planet has written (more than) one or two blogposts about Alan Wilson and Baram Blackett's assertions that the descendants of the sixty Kings of Britain kicked out the Romans (that the southern English tribes invited into Britain) and pursued them across Europe in the fourth century, at their head one King Arthur.
Wilson & Blackett certainly have a colourful history and claim to be able to apply their Coelbren alphabet cypher to ancient Etruscan and Rhaetian and Syrian inscribed artefacts found in their native countries and in UK and in USA and then use an older version of modern Welsh to resolve the translations into non-nonsense English. That in itself is quite a claim.
Hebrew Nations website has covered their claims in great (sceptical) detatil and the Sovereign Wales website has probably the most concise re-imagining of Wilson-Blackett's historical British timeline, it's really fascinating stuff if you've never seen it before.W-B also make the grander-scale claim that, "The Welsh aren't (nor were they ever, European i.e.) Celtic," they are Khumric - a people of the sea. Did they trader-invaders speak Aramaic? Phonecean? Hebrew? What did the Khumric language even sound like?