In my last blog, I gave some updated information on the DNA matches of descendants of Henry Dicks of Newfoundland. As I was writing the blog, new DNA was being uploaded to gedmatch.com. Perhaps the most important results for the Henry Dicks group were tokenized between the last Blog and this one. Those were the DNA results of Gordon. Here is why his results are so important:
You might say that Gordon is higher up on the ladder than the other Henry Dicks descendant DNA testers. That makes all his relationships to other Dicks ancestors closer by a generation or more.
Step 1: All Gordon’s Matches
The first thing I do when I look at new results is run a ‘one to many’ at Gedmatch. That shows all the matches Gordon has.
Out of Gordon’s top 13 matches, 6 are already in our group. Larry is his son. Kenneth, Nelson, and Judy were mentioned in the previous blog. Esther is my wife’s great aunt. Esther and Nelson are one rung up the ladder from Gordon – closer to a common ancestors.
Step 2: All Gordon’s Dicks Descendant Matches
The next utility I use at Gedmatch is called the Multiple Kit Analysis. Here I’ll look at 18 Dicks descendants at once and compare them to each other:
The first 6 testers are from the Henry Dicks Line. The 2nd 12 are from the Christopher Dicks Line. The numbers are in cM and represent the closeness of their DNA matches. I don’t have the names going across the top, but the order is the same as going down. The first grey box in the top right is grey because it represents Gordon’s match with himself. The next box shows that Gordon and Ivy match each other at a level of 14.2 cM.
Now, how to interpret this?
- Shannon has poor matches overall, so we will look at her Uncle Dennis’ results instead
- Gordon and Eric seem to have larger matches with the Christopher Dicks Line as compared to the Henry Dicks line. There may be more than one explanation for this.
- Ivy, Dennis and Crystal have higher matches with Henry Dicks descendants than they do with Christopher Dicks descendants.
- Dennis and Crystal share a common ancestor of Henry Harold Dicks b. 1811. That explains their larger match.
- Crystal and Ivy share Dicks and Matthews ancestors. That would explain their larger match.
Step 3: Dicks Triangulation
Triangulation Groups or TGs have been called the gold standard of genetic genealogy. In this step I download all the specific matches from the last chart. The specifics are what Chromosome the matches are on and what location on the chromosome that the matches are on. These go into a spreadsheet of 608 lines. This represents 304 shared Dicks descendants’ DNA. Not all the DNA is from Dicks. The closer the relationship that is looked at between the 2 people, the more likely the match is not representing Dicks DNA.
Chromosome 6 TG
The first TG that Gordon is in is fairly straightforward.
The gold area is the area of the TG. There are 3 other matches that could be in the TG but aren’t. They don’t even match with people within the TG. For that reason, my assumption is that they match on the non-Dicks side of the realtionship. For Wallace and Judy that would be their Lewis ancestors. Likewise the Mercer ancestors are likely represent on Chromsome 6 for Nelson and Sandra. For Joan and Esther, the large segment they share is likely Upshall DNA. So the TG helps not only those that are in the TG, but those that could be but aren’t.
Here is the Dicks TG on Chromosome 6 displayed on the genealogy chart:
So the fact that Gordon is in TGs with those in another line of the Dicks family doesn’t mean that Gordon is not in the Henry Dicks Line. It just means that there are more outside his line to match and the relationships outside the Henry line are as close as those within. For example, the relationships here are 5th cousins. The relationship Gordon has with the person to his lower right in the Henry line is 4th cousin twice removed. That is equivalent to a 5th cousin.
Chromosome 15 TG
This is the one I mentioned I would address later in my previous Blog. Now is later. This one is a little more complicated, so I took out the double match entries to simplify it:
This is a 4 person TG, so there are more matches. However, within the TG are 2 non-TG matches. These are likely for the Upshall and Joyce Lines. I wasn’t going to draw out the genealogy chart TGs, but doing so illustrates a few points:
Here the patriarch, assumed to be Christopher Dicks, is at the top of the orange TG. The first point I wanted to make is that Gordon is a 4th cousin once removed to Nelson. That is a closer relationship than he has with those currently in his own Henry Dicks Line. The second point I tried to make showing the blue TG. The blue TG is the existing TG which consists of those within the Christopher b. 1789 (son of Christopher) TG. There is even a 3rd point. Assume that Gordon does not descend from Christopher b. 1789 (and I have no evidence that he does). This diagram shows a pretty rock solid intertwined pair of TGs. The first TG identified Christopher b. 1789 and the second one identified that there is also a TG leading up to the patriarch Christopher. In other words, this is proof to me that Henry and Christopher Dicks are brothers. Finally, the above can be seen as one or two TGs. I would prefer to keep them separate as one identifies one ancestor and the other identifies older Christopher ancestor.
Chromosome 17 TG – Hold on to your seats
The ride may get a bit bumpy on this next TG. Here is Chromosome 17 from about 52M-78M:
Here, we have the TG found in the previous Blog with Dennis, Crystal and Wallace from about 52M-64M. Then after that is a new TG with Gordon, Nelson, and Esther from about 58M-72M. So that shows 2 TGs with different people in them, but the TGs overlap a bit. Then after that are two matches. One is between Forrest and Esther that would have to be outside the TG. The other is between Nelson and Sandra that would also be outside the TG.
These two TGs have has me a bit stumped. I have a few theories:
- This could be due to endogamy. Esther has Dicks on her father’s and mother’s side
- Could it be that one TG represents the patriarch Christopher’s DNA and the other represents his wife’s DNA? In that case we would be seeing a sort of mid 1700’s phasing?
- Another option is that these 2 TGs represent common ancestors from different lines.
I suppose it won’t hurt to draw these 2 out.
Given that the chart is geared toward the Dicks Line in general, it would tend to favor Theory #2. Does anyone else have any ideas?
A Note on Ivy and crystal
In a previous Blog on the Henry Line, I had identified a TG with Esther, Joan, and Crystal. Here is what it looks like in gold on the current spreadsheet:
Note that Crystal is conspicuously missing from this TG. Well, not that conspicuous as I didn’t notice at first. I was looking at Ivy/Crystal DNA matches, because at the top of the blog, I had noted they matched each other more than usual because they both shared not only the ancestor of Henry Dicks but also shared a common Matthews ancestor. Now we have a TG on Chromosome 5 between Esther, Joan and Crytal. We assume that TG represents Dicks DNA and a common ancestor of the patriarch Christopher Dicks. That means that between 73M and 111M Esther and Joan share Dicks DNA. Then why do Crystal and Ivy match each other and not match Esther and Joan from 77M to 85M? A likely explanation is that location is where they share Matthews DNA. This also means that at some point between 85M and 90M, Crystal has a crossover. This particular crossover is where the DNA she received crossed over from Matthews to Dicks or more specifically from John Matthews to Fanny Dicks.
So we can identify very specifically from this TG, the exact ancestor that Crystal got her DNA from in these two segments of Chromosome 5. Usually we can just know it is one or the other ancestor. We have essentially phased Crystal’s 2nd great grandfather William Matthew’s DNA into a paternal and maternal side.
There are other likely implications from this TG
- Wallace and Judy probably share Miller DNA in their Chromosome 5 segment above
- Pauline and Kenneth likely share Joyce DNA in this area of Chromosome 5
- Molly and Kenneth likely share Joyce DNA in this area of Chromosome 5
Now look at the last two bullets. If Kenneth shares Joyce DNA with Pauline and Molly, why do Pauline and Molly not share Joyce DNA with each other? The answer is that they do:
So while finding a non-Dicks match within a Dicks TG, I found a separate non-Dicks TG. These 2 TGs, like the Chromosome 17 TGs are overlapping TGs to some extent. However, unlike the Chromosome 17 TGs, I was able to explain these 2 overlapping TGs at Chromosome 5. Perhaps what I have learned at Chromosome 5, I will be able to apply to Chromosome 17. But not now.
My Dicks Family TG Summary Table
This is a sort of a fingerprint of the Dicks TGs to date.
A few notes:
- I have the new (non-Dicks) Joyce TG I mentioned above as TG5A in a raspberry color
- Here I split out TG 15A and 15B. 15A goes with Christopher Dicks b. 1789 and 15B goes with his father Christopher.
- TG17A & B are the problem ones!
- Gordon is in the most Henry Line TGs
- The dark green TGs represent the common ancestor of the patriarch Christopher Dicks and his wife. The light green represent Christopher Dicks b. 1789, the son of the patriarch.
- There is still no TG just within the Henry Dicks Line. A lot of that is due to there being no critical mass there yet. There needs to be a few more Henry Line testers for that to happen.
Summary and Conclusions
- The addition of Gordon’s results have resulted in some more Dicks TGs
- G17A and 17B were a problem as these were 2 overlapping TG – making it difficult to interpret the results
- TG16A & B were interesting as they appear to show a definite link between the Henry and Christopher Lines and a link between the father Christopher and his two sons.
- There appears to be no reason to question the genealogy chart as posted
- I was able to find some non-Dicks DNA while looking at TGs. What other secrets are lurking out there deep within our DNA?
- It has been interesting watching the Dicks DNA project expand.















































































































