I've noticed that many people are still making seriously wrong assumptions regarding the famous Men of the North in Welsh tradition. For that reasons I thought it might be helpful to repost the following chapter from my first book...
While I no longer hold to the theory that Arthur originates from the Men of the North, what I wrote in this chapter still holds true. There are several names, for example, which are not at all what they appear to be. They may be eponyms or even personified place-names. Some, like Mar, actually represent entirely different personages who are found in other sources. I would highly recommend interested parties read this chapter thoroughly, as many groundless and false statements are being made regarding heroic Northern figures.