My brother and my wife spent some time

[Ocelot II]

4. It's kind of interesting. If you go back far enough, everybody is probably related to everybody else -

For each generation your number of ancestors doubles, (4 grandparents, 8 great-grandparents, etc.), and one generation is 30 years, so you'll be able to account for dozens of ancestors by the time you get to the American Revolution - with the result that you'll have zillions of shirttail cousins now. My dad got into genealogy years ago and found some relatives in Northern Ireland, one of whom looked uncannily like my great-aunt even though the common ancestor was alive almost 200 years ago. On my mother's side a Norwegian cousin in Bergen I didn't know I had started assembling a family tree on Geni, which now goes back to the 16th century and features some 700 names. It seems like a lot of work but fun if you like digging in old records.