I don't, but my baby sister did. We ended up finding out that our grandfather (dad's father) had a kid outside of marriage. Got an aunt that's only 5 years older than me. The craziest part was that she was adopted by a couple a few houses down from my great-grandfather. My younger sister and I actually played with her when we were kids but had no clue who she was to us and neither did she.
We've all met, she and I talk periodically and whenever I make the drive up north to visit family we go see her.
Now my lil sis gotta figure out a link to NYC that popped up. At some point after my pops and moms divorced, he hitchhiked all the way to NYC to see if he could get shit poppin out that way. I have zero doubt he prolly shacked up with a broad and knocked her up.