This is an interesting article on how our ancestors fan out in the past and double every generation.
We all have two parents, four grandparents, eight great-grandparents, and so on. To determine the number of ancestors you have, all you have to do is grab a calculator and determine how many generations you wish to go back. That should easy. Or is it?
Read more at: http://famhist2.blogspot.com/2008/03/everybodys-related-to-royalty.html