The following link also yields a fascinating anecdote about George Washington's grandmother and slavery:
http://www.lakestay.co.uk/slave.htm
... and on the subject of GW's ancestors, some years ago Janet and I went for a walk around Sulgrave. It was depressing. The place was deserted, all electric gates, video cameras, and high fences protecting weekend retreats. Worst of all, the village shop and Post Office had closed. So, as you can imagine, I was quite pleased to read a report yesterday that the residents of Sulgrave have reopened the shop and Post Office. So, if you're thinking of visiting the ancestral Washington home, take a little extra time to explore the village and spend some money in the shop.
Bernard C. 8)