Friend of my dad's with unusual first and surnames.
Checked into a hotel in Boston (USA).
Oh, says the receptionist, Mr Unusual Lesscommon you're already checked in...wait...oh there is someone else here of the same name.
The next day, in a bar several miles away, he got talking briefly to a fellow Brit who he then met again the following day in the lobby of the hotel. (still with me?) Of course it was the same name man.
Where are you from? Says same name man.
[small town in Kent], you wouldn't know it, it's just south of London, says dad's friend.
Mr Same Name only lived there too (though originally from oop north) and they bumped into each other periodically when both back home. Dad's friend was in Boston on business, other man was there visiting family and friends. Not so much of a coincidence, but same name man was from near Boston, Lancashire.