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

The Romans weren't known for getting things wrong and Roman 'experts' have given the location as NOT corresponding to where Wigan now is. Of course there is remains of Roman occupation found underneath Wigan, no-one doubts that, but it's the name, 'Coccium' which has NO evidence to prove that Wigan is where it once was.
However, there IS evidence to prove that it wasn't!