Brucetown seems to no longer exist. It was located near Winchester, Va, about 50 miles north of Fauquier County. Isaac was a common name in my Dawes family line.
I don't yet know how to work Ancestry.com well enough but with the member connect feature you can access my line and check on and seek to link to the ancestors I have for William Dawes. I am not at all certain the line beyond William is indeed my ancestral line, but it is one I found in Ancestry.com and I am using it as the only line I can find from Virginia available for now.