While continuing to work on the paper trail to identify Elizabeth Harrison's Cook husband, I went ahead and connected her as Wm C. Cook's mother. I also attached the census data, the link to my blog post(s) with the reasoning, and a note in the Suffix field of her profile.
I revisited the YDNA matches of my brother for the COOK(E) Project and went over my notes and corresponded with one of the project admins. While we do match a group of Pattersons as close as we match Cooks, the Pattersons lived near the GA & NC Cooks that descend from the Shem Cooke and there seems to be a connection to his line. If our connection is thru Wm Pope Cooke that married Betsy Harrison, then we would likely connect all the way back to Shem Cooke thru a line of men with the given name of William. Prior to the BigY testing the 37, 67, and 111 marker tests were all we had. There is representation more so from Shem's son James thru his children Roland(d. 1842 West TN) and Shem(d.1862 Carroll Co GA) There is one tester who descends thru the elder Shem Cooke(d. 1796)'s son William but he only tested at 37 markers. His result contains no differing mutations with my brother at that level so he is an exact match at 37 markers. This is an older test so I'm unsure if an update is possible but I am trying to make contact with others from that line who might be interested to see if we can come up with a way to compare. At the same time I'm working further on his paper trail to see if it crosses with ours. When my brother's test came in, I worked the matches trees to figure out exactly how they all were the connected. Many of them didn't have trees...so I had to do a lot of sleuthing to figure it out but for the most part I have a very good picture of how they connect.
I have access to AncestryDNA match lists of several descendants of the Shem Cooke(Carroll Co GA) and I have been looking at their closer matches to see if I could find an intersection with our clusters of unknowns which are likely Cook/Harrison related. I did find one where I started noticing surnames that were familiar among those matches and have now identified more Harrison matches.
After having Elizabeth Harrison Cook connected for 2 days I am now seeing matches that descend from her siblings. The great thing is that those matches are not all thru Rebecca Harrison who would match with the Cook Putmans because of their connection to Hiram Putman(Elizabeth Putman Cook's brother). There are descendants of Nancy Harrison Hight, Gideon V Harrison, Edward Cannon Harrison and Martha Harrison Smith. I think too somewhere back in there is another HIGHT connection or a connection to the Nichols(wife of a Hight). The relationships of those matches are mostly 5C & 5C1R and are all well in range for those relationships. Checking the shared matches is helpful as well to make sure none of them matched her(they didn't.)
It should be noted that Thrulines® is a Tool that works using our DNA match list along with the trees on Ancestry. It's still up to us to document and prove our conclusions so that our research is solid.
