Scott, thanks for bringing these old posts back to the current pages. Loss of being able to update or post new queries on the genforums is a terrible thing.
This area is pretty confusing but I do have some (distant and/or indirect) autosomal DNA matches from this area so it is likely that the Burtons there really were from the Henrico clan descended from John Burton of Longfield. His son Robert & Mary Nowell Burton had at least 5 sons and we have placed yDNA descendants with 3 (Robert, Nowell & Hutchins).
Re: Benjamin Burton, brother of the Nowell that "Wilkes Co." Richard descended from, the sons we DO know something about (Jesse & Jacob) apparently had no issue. He had some other sons mentioned in the incomplete copy of his will that survived but we know nothing of them, either. This has always bothered me as we have had many yDNA kits from men who don't know who their "Virginian" was and we have placed them in the lines of other brothers of Benjamin. We have never had a test come in from anyone who KNEW they descended from Benjamin.