My apologies - I posted the wrong reply to your query. My reply should have been: I am descended from Frederick, brother of the George in your post.

If you go the site below you will find additional info on your George:

http://members.rogers.com/johnquanz

If you scroll down to the bottom you will see entries for the Markham Quantz' - Chapter 21 is where the info is. I have a George Quantz married to Maryanne Baker (Batger) (Badger) around 1807.