What is your wildest coincidence?

[ptdrifter]

I worked for many years in Bunhill Row in London, unaware of any connections.  I later discovered that my 3 x Gt grandfather, and his brother were jewelers and watchmakers in Bunhill Row in a shop that had been very near where my offices were built many many decades later.

[DianaCanada]

Years ago my daughters were living in Surrey, BC, close to Vancouver.  I had found a relative from Sussex who had died in BC, and as they were going to the main Vancouver library, could they look up his death in the local newspaper on microfilm (I had the date). They did this for me, and it turned out the man had lived on the very street they were living on in Surrey.  Quite a large urban area, so this was quite a coincidence.

[ShaunJ]

Finding my wife's ancestor in the 1841 census, and then turning a couple of pages and discovering that he'd signed and dated the last page of the census book as the enumerator.

Not sure if that counts as a coincidence but it's quite a thing. How many enumerators signed their census books?