Not All Daughters Lead to Matrilines

 

It seemed like such a straightforward, streamlined solution: to determine which of John Carter's children belonged to which of his wives, start with the daughters. Then, since my fifth great-grandfather John Carter lived and died in Virginia in the 1700s, trace the descendancy of his many daughters, seeking to focus specifically on the daughters' daughters' daughters, on down to the present time, at which point we could find willing Carter descendants of those matrilines to take a mitochondrial DNA test and help us compare results.

There's a problem with such an approach. Yes, of course, there is that one issue of finding eligible descendants who would be willing to participate in such a DNA project. But that is not the problem which concerns me. Where I'm stuck is this: not all ancestral daughters would eventually lead to matrilines. Somewhere in that long line of generations, John Carter's descendants could experience the exact opposite of what genetic genealogists call "daughtering out."

While I'm still stymied with actually documenting the genealogies of all of John's children, I did find one way to do a quick and dirty assessment of such a situation. I turned to the ThruLines tool at Ancestry to see whether, even at the level of fifth great-granddaughter, my autosomal DNA test could reveal genetic connections to this distant Carter ancestor.

At the level of fifth great-grandparent, that is the most distant level the ThruLines readout will extend. Sure enough, there in my results was an entry for my own DNA matches who join me in linking back to John Carter. 

There were seventeen of those Carter DNA matches. The closest of them shared a puny nineteen centiMorgans with me—an understandable amount, considering the distance of the relationship—and the smallest shared amount registered at only six cMs, hardly a measure generating confidence.

Still, my purpose was to do a quick assessment of my theory that finding matrilines direct from the current generation back to the Carter wives might be a challenge. Looking at the proposed lines according to ThruLines, here is what I found: 

• One match to Mary Beverley Carter, through her son Richard C. Stevens
• Five matches to Margaret Carter (half sister), all through her son Carter Marshall
• Six matches to Sarah Carter (half sister), four through son John Sutton, two through son Norborne Sutton

As you can see, none of those matches came strictly through a matrilineal line of descent, foiling our project's purpose. 

Looking even further, checking the ThruLines entries specifically for the wife of John Carter from whom I'm descended, Hannah Chew, there are a total of fifty nine DNA matches currently entered in this category. For one of them, Carter daughter Judith showed six matches to me, but three come through Judith's son Joseph Sutton, two from son Stephen Sutton, and one more from son John Sutton. Not even among these can I find lines of descent from any of John Carter's granddaughters. I, myself, am such an example, as the matriline leading from Hannah Chew to me stops with my second great-grandfather, Thomas Taliaferro Broyles.

In a general exploration of all of John Carter's grandchildren, I spotted further problems from documentation. Some daughters did have daughters of their own—but of those I've found so far, some died young, or, having survived and married, had only sons. I did find one daughter who had a daughter—but I find no record that she even married, let alone had daughters of her own.

Granted, ThruLines relies on the trees of those who tested their DNA at Ancestry. There can be mistakes. But even the old published genealogies some people rely on contain errors, too. Seeking actual documentation, as we've already discovered, can reveal details not included in some genealogies.

To complicate matters, researching ancestors from the 1700s is far easier when we are looking for ancestral grandfathers than when we are looking for their wives. Women from earlier centuries seemed almost invisible, adding this one challenge to our quest to trace the matrilineal descent of John Carter's wives. Still, if someone doesn't build the tree, we'll never arrive at the answer we're seeking.