History of Wigan   (Help with ancient and recent history.)

Well, I am no expert...
But them as is, and plenty of um, sez as Coccium is Wigan.
They have evidence. Maybe their evidence is bigger than other people's evidence. That's why they say "almost certain." Guess they probably know about the conflicting evidence, and have come out with a conclusion. Experts do that sort of thing.
It's a new book, with new stuff in it. Available in the History Shop, or 'Museum of Coccium Life'.