Midlands ancestry and GEDmatch (UK)

I've been trying to make sense of SNPs and centiMorgans, segments, chromosomes and phasing. Reading about eastern Polynesian endogamy has been helpful with some real life examples of how genetic material may be inherited.

What Are The Odds from DNApainter is proving fairly straightforward, though is limited (it says) when each result shares an average of <40cM with the tester: 90cM is better. And I'm not sure what its views are on endogamy, complex relationships within the extended family, or generally "sticky" DNA (without there necessarily being endogamy).

I've tested with Ancestry DNA, which has been highly informative, reassuring and maddenly suggestive. I'm in the process of exploring the benefits of uploading this data to other sites, this month it's GEDmatch.

Yesterday I focused on a family group in Leeds. Ancestry very helpfully confirmed that our shared origins were in the Midlands (which I interpret as Staffordshire and the conurbation where Staffordshire, Warwickshire and Worcestershire all met). I say confirmed, as I'd already guessed this from the useful data at GEDmatch.

I'd have been unwise to look at this match, despite the "Midlands" tag, without knowing two things, that Peter (from Leeds) matched Mrs C (from Liverpool), that as well as matching each other they matched us. And secondly, and most critically, that all three parties actually share some precise segment of the same chromosome.

For both of these requirements, I needed GEDmatch. In fact it was at that site where the shared segment in question, and its three holders, was identified. The amounts shared are small (and so not resulting in a cluster of matches at Ancestry). It is nonetheless a cluster though, one that could easily have been missed.

I'm glad I persevered. Mrs C had popped up in another triangulation exercise on the site a week prior, so I'd already done the digging and knew her connection to us. We both descended from Jonathan Gee (origin: Hyde, Cheshire) and Sarah Brasier (origin: Kinver and Enville, Staffordshire).

GEDmatch's new triangulation, therefore, hinted quite strongly that the Leeds family also descended from this couple, or from one or more of their parents/grandparents. Further back seemed unlikely as we'd be talking ninth cousins, which, with very little endogamy present, seems unlikely for matches of 11cM plus.

The Leeds family's tree was largely spoken for and not looking very Midlands. The Yorkshire part did not fit with a gradual drift up from our Chesterfield branch. I couldn't see any geographical overlaps over the period in question.

I was intrigued by the final grandparent: Mr Davies from Wales. Closer inspection of the excellent tree showed that this chap's birth record was very much missing in action. But his Dad, of the same name, was a Wire-Drawer.

My antennae says Midlands, for that occupation. Exactly what we need. I'm still short of biographical detail, but going back through his tree, I saw some names I recognised. This wire-drawer was from Kinver, and descends from the only surviving brother of Sarah Brasier (born 1751).

You can bet I'm keen to establish full biographical detail on this branch, as it strongly appears we can paint in those 11 or so centiMorgans as being from Kinver.

I have more reading to do. More records to find. But all this is just a warm-up flex and stretch before I take on Ireland. Am I ready? After 11 May maybe, as our local café's famous Irish breakfast will be back on the cards.

Thanks GEDmatch, by the way. I'm genuinely tickled to have 7x great-uncle waiting in the wings to be a bona fide relative, particularly one right at the heart of the Industrial Revolution in the Midlands (for better or for worse).