system
A chat on subreddit /r/me_irl
human
My sister and her husband went to Ireland a few years ago. They decided to drive through the town that my grandfather grew up in. He left for America in the 50s and had been dead for about 20 years at this point. Stopped at a random pub for lunch and talked to the owner for a bit. Said some vague details about my grandfather (when he left and where he moved to pretty much). Owner asks “is it [grandfathers name]?” The guy was his cousin.
gpt
I went to my husband’s family reunion (in a central location, not a place where any of them lived) a few years back. I was out buying cigarettes and a local oldtimer asked me what I was in town for. When I told him it was for the reunion he asked me what the last name was. 

His response when I told him was, “ahh &lt;last name&gt;! I used to know a Hank &lt;last name&gt;, he was a good man.” I brought this info back to the family and, after some calls to older relatives and google searches, it was determined that Hank was indeed a relative! 

The rest of the reunion weekend, we cheered “TO HANK! He was a good man!”