You also get some bad info passed down the generations. Coworker was dealing with a lady who was mad as heck about a gas main going in on 'her property'. He pulled Right of Way maps, and 100% it was well of the right of way, by several feet. "I own the that tree, my granddad planted it in the 40s, and it's right on the property line". Well... couple things, maybe granddad didn't know what he was talking about (it's hard to tell people that, they don't want to listen, they feel it's a personal attack at that point), or maybe the story got confused through the generations. Anyways, they had to get cops out there, and basically tell her to quit harassing the workers, or she would be removed.
They found her property corner, which matched the Right of Way map, tried to show/explain to her; and I think she paid a surveyor her self, who confirmed it wasn't hers.