People also sometimes 'took' a piece of land and allowed it over time to be known as theirs. This still happens - in one small town here, there was an 'access' track that ran along the bottom of properties, which was used by householders to fetch water from the pump at the top of the terrace (within living memory)
Once everyone had indoor plumbing, folk started to move their back fences to the fr side of the track, saying non-one needed it any more. Fast forward to most of those households having 2 cars, and parking problems, so the local council tried to re-instate the common access and make a road - to offer access to back gardens and therefore parking. Oh the outcry 'you can't take my land!' even though many remembered when it hadn't been theirs. So no access, lots of parking problems, and I was in the street when a fire engine had to bash through for fear of lives being lost.
Just before Covid hit, our local pub shut. Someone whose property backed on to it, moved his back fence and built a patio on the pub land! However, once the pub sold, the new owners issued a notice to return it!
Arghh!! Moving house and conveyancing frustrations