Downtown Dad says: My children and Geo W. Bush's kids have their seventh great grandparents in common.

OK in other words - Downtown Dad's mom and George Herbert Walker Bush are 6th cousins

To bring it down - the common grandmother is Magdalene Chastain who lived from 1735 to 1771 in Manakin Goochland, Virginia - she married Jean Gividen, a French guy from the village of Gividen in France.

And they begat, and they begat, and so on and so on...

As if I'd ever invite them over for Thanksgiving Dinner....