I have been doing family tree research for nearly 10 years so im not a novice but.....
I have been having trouble with Manchester and the sub-districts. Sometimes it even depends on what side of the street you lived as to what area you belonged. There is even a building ( so my cousin tells me) If you use the front door its one district, if you use the back its another and if you go out the side door it another district entirely.
I was born Crumpsall but lived in Gorton and i have lots of family registered at Manchester but also im now finding stuff at Ashton , which is Tameside and now under Cheshire. There is also lots who were born in Gorton or Openshaw but registered at Ashton?
My mother was living in Droylesden and her death certificate says Tameside.
Im now checking both Lancashire and Cheshire, that way i'll not miss anyone.
Best wishes
Pauline