This is what the family tree of my Zaturensky DNA matches currently looks like. You'll have to click on the chart to see a legible version. It shows our patriarch, Chaim Zaturensky, at the top, then his two sons, Movsha (orange) and Meir (blue). Movsha is shown with the two wives that we think we know of: *Chana to the left in light orange, and Sura to the right in yellow. *Chana has an asterisk because I'm not really sure that's her name. Movsha and Sura are my great-great-grandparents, and I am 4 generations down from them, in yellow with a red border.
My DNA cousins are shown in the colours of their great-grandparents, and with the strength of their DNA relationship to me. All the matches are on the AncestryDNA platform, apart from one. Ancestry has a number of plus points - a huge clientele, a massive database of historical records, and many thousands of family trees submitted by users. However it is - to say the least - somewhat lacking in tools for analysing your DNA matches. So much so that this project would never have got off the ground - it would never even have occurred to me - without a crucial clue provided by a wonderful tool on a third-party platform: Auto-Clusters by Evert-Jan Blom of Genetic Affairs.
The Cluster
The idea behind clusters is simple, and it doesn't even need to analyse your DNA. You just try to put your matches together in groups where each person also matches each of the others in that group. In other words, every member of the group is related to all the others. All you're looking at is whether someone appears on someone else's list of matches, without reference to the closeness of that relationship, so some of the relationships might be quite distant. But they are real. Evert-Jan Blom's Auto-Clusters did this automatically for you. I say 'did', because shortly after I used it on my AncestryDNA matches a year or so ago, Ancestry issued him with a 'Cease and Desist' notice, and he had to stop offering it.
You could think of these clusters as extended-family groups. Once you start tracing back from the members of the cluster, they might point you towards a common ancestor. If you're lucky. And if you're really lucky, that common ancestor may not be too far back, and you may be able to identify them using the usual genealogical methods.
Which is more or less what happened here. A well-formed but mysterious cluster of seven matches led me to the Trees that the members of the cluster had put up. Some of them were quite sparse and tentative, but nevertheless they were full of clues which guided much of the subsequent research.
The Network
And here we are. The original Green Cluster of 7 matches has now become a network of some 20 cousins, all descended from Chaim Zaturensky. Note that not all of them are shown in this chart - there are a few who I have not been able to locate on the Tree with certainty, and there's also a pair of siblings, of whom I'm only showing one. Nobody - least of all me - was aware of the structure of the family; in fact I knew nothing except for the family name, which needless to say, nobody else knew.
Very few people were aware of the existence of cousins outside their own branch, and those that did, the knowledge was exceedingly vague. The branches of the family had drifted apart over succeeding generations, notwithstanding the concerted move from Pinsk to Peoria to Los Angeles which we have charted during the course of these posts.
The Branches
The Oranges
Here's my relationship to the descendants of Movsha and *Chana, the orange cousins. They had 3 children that I know of, *Beila (see The Beila Hypothesis), Dora and Joseph. I have located 2 DNA Cousins for each of *Beila and Dora, and none as yet for Joseph. They will all be 3rd Cousins of some sort to me, as they share descendancy from my great-great-grandfather Movsha; however, since these cousins do not share my great-great-grandmother Sura, they are half-cousins to me:
DP and PB are ½3C, as they are the same generation as me
KS and JM are ½3C1R (once-removed), as they are a generation below me
We also have to take into consideration that Ashkenazi Jews are a historically endogamous population, marrying within the community across many centuries. This has led to them sharing much more 'background' DNA with each other than is the case in other, non-endogamous, populations. This could become significant in cases where one person in a match has two AJ parents, and so has 100% AJ DNA, and the other has one AJ and one non-AJ, and will thus have 50% AJ DNA. As a consequence, this second person will have inherited less of the 'background' DNA, and the match will (usually) show a lower overall centiMorgan (cM) count.
All the matches in the Movsha-*Chana group have 100% Ashkenazi Jewish DNA, apart from DP; his father was a Zaturensky descendant, his mother was not Jewish, and so he has around 50% AJ DNA. I have denoted this with a dotted border, so that it is easier to take into account visually on the chart when comparing the strength of the matches. At first sight the cM figures for this group seem to fit in with what my research is telling me - DP matches me at 65 cM, roughly half the level of PB (138 cM), who is 100% AJ. And the matches in the following generation, KS (58 cM) and JM (31 cM), would be expected to share about half the overall amount of DNA with me that someone in PB's generation does, as they only inherit half their DNA from their Zaturensky parents. JM's figure is a bit lower, but it doesn't alter the general picture, as the amount of DNA people share in the 3C-4C range can be quite erratic.
The Greens
This group are my closest cousins, descendants of my 2g-g'parents Movsha and Sura. They had 2 children that we know of, my g-g'm Shprintsa, and a son Shmuel. So these cousins are full 3Cs to me through Shmuel, but they are also related to me via Shmuel's wife, his first cousin Rochel Leah, daughter of Movsha's brother Meir. Which means our common ancestor is Chaim, the family patriarch. Chaim is my 3g-g'f, so these cousins are 4C to me via this route. To denote this dual relationship, via both the yellow and the blue branches, I have painted them green. Of course.
RM and PL are in my generation, and are 3C + 4C to me. RM has a non-AJ mother, yet the strength of her match to me (126 cM) is virtually the same as PL's. RM's sister's match to me, not shown in this chart, is about 20 cM lower.
GM, meanwhile, is one generation above me in the Tree, though there are only 3 years between us. He has a correspondingly stronger match with me (184 cM), and is my 2C1R + 3C1R. And yes, he's the original 'Private Morris', the mystery match whose appearance near the top of my AncestryDNA list set me off on this trail a year and a bit ago.
The Blues
DR, DB and MG are all in my own generation, so they are straight 4Cs to me. DR and MG share similar amounts of DNA with me, although MG is 100% AJ and DR is not. DB comes in as a lower match to me, although she has a higher proportion of AJ DNA than DR.
Something similar seems to be happening in the following generation, where both JR and CK, my 4C1Rs, have quite low proportions of AJ DNA, and yet CK shares considerably more with me than JR. And also in the generation above, my 3C1Rs DM and HH: DM is 50% AJ, HH is 100%, and yet my match with DM is considerably stronger.
These sound like anomalies, where the numbers don't come out as we might expect them to. However, I think all these apparent discrepancies can be put down to the vagaries of random inheritance. That's what makes us all different.
The Next Steps
Unfortunately, at the moment we can't take the DNA analysis any further on AncestryDNA. Unlike the other companies I have my results on, they do not provide us with a Chromosome Browser, which makes it impossible to check the locations of our matching segments, and maybe find others who match us in the same places. Nor can we check how our matches match each other. This is a great pity, as all bar one of my Zaturensky matches appear to have their results uniquely on Ancestry.
There may, of course, be other members of the family who have tested with other companies. At the moment I have my DNA data on FTDNA, MyHeritage, GedMatch, LivingDNA, and Geneanet, and I look forward to finding more of them there.
I am in contact with many of my new-found Zaturensky cousins, and will be sharing the full version of the Tree with them. Doubtless there will be many corrections and additions to make. There may even be further branches out there somewhere - our 'patriarch' Chaim may well have had siblings, and he may have had more children than the two we know of, Movsha and Meir.
And if you think you are connected with us, whether through DNA or not, please have a look at what I have on my Ancestry Tree, and let me know!
