Well, one never knows when one will come across with one who knows one's relatives or has a shared surname.
My older brother's middle son, John Mark Doty, was in the US Air Force as an enlisted man and he was in Desert Storm.
While he was over there, an Officer in the US Army saw his name tag on his uniform and told him, "I have an aunt, my father's sister, whose married name is 'Doty.' And she lives in Oklahoma."
John said, "My grandmother, Loretta Doty, lives in Oklahoma, too."
The guy said, "That's my aunt's name, too."
Talk about a small world. John and the guy, Robert Willhoite, had never seen each other before and they were cousins.
Oh, in regard to it being Mother's Day here and relatives finding each other. When I lived in N. Hollywood, I met Jimmy McCoy, who was born and raised in Texas. He told me that his mother was raised in the same county as my own mother. While we thought we might also be related by blood, we had relatives who had gotten married. We did figure out that one of his uncles had married one of my mom's Cherokee aunts (there was no blood connection with the couple at all).