It happens to countries too.
I've just been reading the Manchester Evening News and there was an article on a village that used to be in one county and then it's in another. The MEN is atrocious as far as its journalism goes but I'll link it anyway.
It got me thinking about how my mum and nana used to classify themselves and a conversation with my much older sister back in the 80s. My sister considered herself a Mancunian. She was living in Fallowfield at the time but had grown up between Yorkshire and Greater Manchester/Cheshire. Mum disagreed and said she was a Lancasarian (or similar, I was young and can't remember exactly). My sister was born in Yorkshire so I was totally baffled by this as we were living in the midlands at the time. Mum said I too was from Lancashire. My Nana was from Lancashire as was my Grandad and my mum was born in a lam ashore town that's now part of one of the areas of greater Manchester but not referred to as Lancashire now.
Over the years I've wondered about this because Greater Manchester incorporates several counties. I have never considered myself Mancunian and was brought up and now live in a small town in Cheshire on the edge of Derbyshire or also known as High Peak. The nearest big town is not one I identify with either and find myself a bit lost really when it comes to my regional identity.
It's bloody confusing! We were mostly born within 10 miles of each other except for the Yorkshire born siblings. My dad was born in Lincolnshire i think and lived mostly in Yorkshire as a child and young adult but he was definitely a Yorkshireman and I feel quite an affinity with God's own county.
I suspect that if I looked at Greater London history my mind would be blown. To me it's a fairly far off mystery place that is bloody massive and I don't know where London begins or ends. It has zones according to what I've read here.
Inside the Yorkshire that town that woke up in Lancashire 50 years ago www.manchestereveningnews.co.uk/news/uk-news/inside-yorkshire-town-woke-up-25616384?utm_source=app
So basically what are they messing about with changing boundaries and if you are from somewhere that has had its boundaries messed with over the years how the hell do you know how to identify yourself?