Places   (Help with places, streets and buildings in Wigan.)

Downall Green was part of the Seneley Green Parish, in Ashton in Makerfield., for hundreds of years.
Never, ever, has it been in Wigan, as that would be physically impossible. Never, ever, has it been under Wigan council.

However, you'll be pleased to know that it is included in the WN postcode area, which means it's letters are delivered from the Royal Mail sorting office in WIGAN.
I hope that gives you some welcome relief from your mind-bending ideas regarding where you are / were / from / are likely to be in the future !