That is absolutely creepy.

One of my grandfathers was on the village council where I grew up. My grandma's diary talks about how they found out somehow that someone wa buried in space infringing on my other grandfather's grave. I don't think anyone told my 2nd grandfather. It wasn't too much to keep him from being buried but still was startling to read.

I can see that easily happening at an old cemetery though. Where I used to live had one of the oldest cemeteries in this state and the grave markers were pretty randomly placed.