Our Wright DNA signature can be found on the surname project website under kit N48391. It is grouped together with some Wrights hailing from Augusta County, VA -- you can click on the two hyperlinks for William 1776 to get more background about that branch.http://www.wright-dna.org/dna/R1b1Results.html
Have you had a Y chromosome test yourself, and if so, are you part of the surname project?
There is another type of DNA test that's not limited to the Y chromosome. It looks at hundreds of thousands of markers scattered over all the chromosomes, so it can track lines that zig-zag back and forth between males and females for several generations at least. You can get this test at 23andMe or Family Tree DNA's Family Finder. My uncle has tested at 23andMe and N48391 has a test underway at FTDNA. Have you done either of those tests?
I'd also be interested in hearing more details about your Aaron -- where he lived in various census years, whom he married, etc etc!