Once upon a time there didn't use to be a 'St Helens'. Area names can occasionally change. But we all knew that Ashton was called "Ashton in Makerfield'. It isn't a new thing. There were times when Newton-le-Willows was called "Newton in Makerfield". See, that was its historic name.
Or shall we be further witness to your boiling rage?
Ashton was subsumed (yes, subsumed!) into the Metropolitan Borough of Wigan and Newton was similarly subsumed into the Metropolitan Borough of St Helens, and the destruction of their former Makerfield identity was completed.