Genetic Genealogy - verifying the family tree with shared DNA segments

This is an aspect of Genetic Genealogy that I'm sure is well known to some researchers, but that, I'm only just starting to appreciate.  I've been DNA testing for ancestry heavily for a year or two, but my prime interest has been older ancestry, admixture, and population genetics.  All of my early attempts to contact matches through 23andme and GedMatch, resulted in frustrated conversations with North American testers, that had no paper trail back before their ancestors emigrated.  Today, I matched on AncestryDNA with a third cousin.  The DNA prediction was fourth cousin, but the relationship on paper is third cousin.  This was my third match, confirmed by both shared DNA segments, and by a shared paper trail to common direct ancestors.  How cool is that?  Finding that yourself, and other researchers, share segments of the same DNA that appear to have been inherited through recent common descent.  Finding each other through the code of Life that is in our cells, and being able to see where that DNA came from in our family trees!

The image at the top of this post represents the biologically verified tree, as represented by colour shaded areas of my pedigree fan.  This is based on descent from shared ancestry found in DNA matches.  There is always the slight possibility that we share DNA from other unknown or unrecorded routes.  But the probabilities are high, that these shared segments of DNA do come from the known common ancestral roots in our trees.  The stronger the verification, perhaps through multiple matches, the darker the shade.

This discovery of a third cousin on AncestryDNA, combined with my mapping of the correlations between paper trail and DNA matches serves as an incentive to work harder on finding and contacting matches.  I've also spotted common DNA segments with someone that flags up as a fourth cousin ... but according to our shared paper trails, and family lore, should be a second cousin.  I'm trying to get a response from the tester.  But have I uncovered another family secret?

Genealogical updates - 3rd Feb 2017

Above photo of Emily Smith (nee Barber) and her son Sid Smith (a First World War veteran) in Norwich, Norfolk.  Emily was born at Hedenham, Norfolk in 1859, and was my late father's maternal grandmother.  In the 1871 census, she was recorded as an 11 year old crow keeper.  Emily went into service in Norwich, where she met my great grandfather Fred Smith, a wheelwright born at Attleborough, Norfolk.

New Gedmatch

I've recently had two genetic matches that actually work out in the form of documentary evidence.  the first came via FT-DNA Family Finder, when I was approached by an Australian genealogist, who it turns out, is the fourth cousin of my mother, via the Thacker line.

Then over the past few days, I spotted a new kit on GEDmatch, that shared 56 cM, with the longest segment at 27 cM.  It is on my father's side, no match to my mother's kit.  My closest ever GEDMATCH.  It's early days, but a quick comparison on our documentary records show a documentary match.  We both descend from a Barber from the hamlet of St Michael, South Elmham, Suffolk.  Gedmatch puts us at four generations apart, but I suspect a few more.  I feel a need to visit St Michael and the Suffolk Record Office to clear this family up.  Only a week ago, I discovered online that my 3xgreat grandfather Robert Barber of St Michael, may have been transported by the Suffolk Assizes to Norfolk Island, and onto Van Diemen's Land (update: See next post - he was not!).

I still had more success with "expanding" my family tree by contacting genealogists back in the old days, by surname interests listed in the annually printed GRD (Genealogical Research Directory), or in monthly genealogical magazines.  However, there is something fascinating about discovering distant relatives by comparing chromosome browsers online.  To think, and to see those shared DNA segments is very cool.  It shows how little bits of personal DNA filter down, often to unknown people in the street, with no idea of relationship.

Thacker News

I received another commissioned certificate from the GRO (General Registry Office UK).  I didn't waste money, it belonged to an ancestor - Susannah Thacker, a 3xgreat grandmother.  She was born at Salhouse, Norfolk in 1823, to an anabaptist family of agricultural labourers.  She had given birth illegitimately to my 2xgreat grandfather George Thacker in 1847.  After that, I had no idea where she went.  Her son George Thacker, was brought up at Rackheath, Norfolk (next to Salhouse) by his grandparents.  He recorded Susannah Thacker in the father entry of his marriage registration.  Until I saw that, I only knew her from census data as Susan Thacker.

I recently searched online for her, I wanted to know where she went.  I only found index references from the GRO.  I ordered.  Now I know that in fact, she left her son George with her parents, but went on to marry a widower, a Samuel Birch, at the Norwich Registry Office in 1855.  They lived in Norwich.  That seems good.

George Thacker with his wife Sarah (nee Daynes) circa 1877.

Genealogy - why?

Anyone that loves a who dunnit, or a crime novel, should love genealogy.  It is all about detective work.  looking for clues and evidence.  Collecting it.  Answering mysteries - even as mundane as "what happened to the Peach's of Maxey" (the father was transported for stealing cattle), or where did my 3xgreat grandmother go?  Awesome stuff.