This happened to me once, in reverse. A mailman had my same surname and was from the same town as my father.

He really was interested in finding out if we were somehow related, but I was, like, “buddy, I worked night shift, please, let me sleep”.

He was a bit disappointed in my reaction, and I still think about it. I don’t know where you are now, random maybe-distantly-related mail buddy, but I want you to know that I’m sorry and I wish you the best.