A New Frazer DNA Test on the Stinson Line

It has been a while since there has been a new Frazer test. With the results of Doug’s Aunt Rita in on the Stinson Line, the Frazer DNA Project has roared back into life. Here is the Stinson Line of the Frazers:

I tried to air brush out some of the last names for privacy. Doug and Aunt Rita are on the green line. They share 1,894.6 cM of DNA which is a bit higher than the average posted on the ISOGG Web page:

Note that in comparing those in the chart above, that they may match on the Frazer Line or the Stinson Line. However, in matching those outside this chart, they would be more likely to match on the Frazer Line.

The Numbers, Please

Now it’s time to run the numbers. I found a cool new tool at Gedmatch for doing this. First I added all the Frazers to a group.

Then I just had to choose that group for different analyses. Here is the Autosomal Matrix. This is like ordering the “everything” pizza. This Matrix has ALL the Frazers:

This is also known as the Frazer eye test. I have the Frazer/Stinson group in yellow. These Frazers are only in the Frazer/Stinson Line. Then, there is the green group. They are in the Stinson Line but also in at least one other Frazer Line. There are some good matches where green and yellow intersect, notably with Jane. These are more likely to be Frazer/Stinson Line matches. Where the green intersects with green, it will be difficult to tell if the DNA is from the Frazer/Stinson Line or from another line. The names in white are from my family. I recently had my sister Lori tested. Now there are 5 siblings tested in my family. Paul is a second cousin, once removed. Purple represents the James Line of the Frazers. There is a purple Jonathan and a white Jonathan. Scanning the yellow names from left to right, they match my family a bit more than the James Line Frazers in purple. There are a few exceptions where there are higher matches. This may be due to a match on a collateral line. Or this may be due to the effect that if a match is going to break through a distant relationship it can just as well break through as a somewhat larger match than as a smaller one.

Triangulation Groups

I like to use Triangulation Groups to sort out some of these families. A Triangulation Group points to a particular ancestor which should point to a particular Line of Frazers. The problem in this was alluded to above. That is, what if some Frazers are from more than one line? In order to somewhat get around this, I’ll make special note of the Frazers that are known to be only in the Frazer/Stinson Line. Namely, Rita, Cathy, Ros, Doug and Vivien.

Chromosome 1

In Chromosome 1, I see a Frazer/Stinson Line Triangulation Group (TG). I previously had my brother Jon in that group, but that appears to have been a mistake:

Here is the what the TG likely looks like:

I say likely, as Jane and Michael also descend from the Richard Frazer Line. However, that would put the common ancestor as Archibald the father of this Archibald Frazer which would be a less likely match.

Chromosome 3

The next TG is also difficult to explain:

Here we have Michael and Rita, both in the Frazer/Stinson Line. They both match Prudence from the somewhat distant James Line of Frazers. I had to double check to find the match between Michael and Rita to finalize the TG. Here is a possible rendering of that TG:

I pulled Michael (pink box) off the Richard Line as he wasn’t put into the Frazer/Stinson Line on this chart to save room. This particular representation forces our attention to the parents of the James (on the right) and Archibald Lines (on the left above). However, a slightly later unknown common collateral line would also be possible. For example, Prudence has a Peyton ancestor. If Michael and Rita also had the father of Prudence’s Peyton ancestor as their ancestor, that would put the top circle one level down. The TG is sure. The interpretation of who the TG represents is not as sure due to holes in the genealogy near the top of the chart.

Chromosome 4

Here is a new TG with Jane, Cathy and Rita:

This TG is important because it is most certainly a Frazer/Stinson Line TG. I had to take down the Gedmatch levels to get the match between Jane and Cathy. If I were to map out the Frazer side grandparents for Rita, Cathy and Jane, they might look something like this:

As you compare Cathy and Jane’s green sections with each other, you can see that the Frazer overlap is relatively small.

Chromosome 5

In Chromosome 5, there is a similar situation with Pat, Cathy and Jane:

Again, I had from my Gedmatch download that Cathy matched Patricia and Cathy matched Jane. What was missing was the Cathy to Jane match. I lowered the Gedmatch thresholds and found a Cathy to Jane match right in the expected area between 73 and 76. Note that the Patricia to Cathy match ended at about 77M. The Jane and Cathy match started about 73.

73 is the crossover for Jane from McBride to Frazer. It is the number that Jane has in common with both her matches. Likewise, Patricia’s crossover from her Frazer grandparent to her Gray grandparent is at 77M. It is the number that she has in common with both her matches. So that tells me something is going on there (i.e. a crossover). The area between 73 and 77 is where Patricia and Jane match.

In reviewing my past work, I see that I had shown a TG with Gladys, Pat and Cathy in this area. To see that, I need to go further up my spreadsheet:

So let’s map out Gladys’ DNA from her grandparents. It looks like her match with Cathy and Patricia tell me that she has Frazer DNA from 54M to 134M. But where is her match with Jane? When I run a one to one match at Gedmatch between Gladys and Jane, I get this:

73,514,449

76,680,718

5.3

842

With this information, I’ll draw a revised Chromosome 5 Map:

It was a little tricky to draw this map. I think that what happened was that Patricia and Gladys share the common ancestors: George Frazer and Susannah Price. Notice that Patricia and Gladys have a large match. I think that match is picking up the older crossover in Patricia of George Frazer and Susannah Price at position 77M. Well, you can see I’m still working these things out!

Chromosome 9

Here is a new Frazer/Stinson TG at the end of Chromosome 9:

In it, we have Doug, Rita and Patricia. Interestingly, Ros, Vivien, Gladys and Bill don’t appear to be in this TG. They seem to be busy being related to each other on their non-Frazer sides.

Anything Else, Summary, Conclusions?

I found it interesting that Rita matched Prudence. Rita’s match with Prudence was a little larger than any found so far and Rita and Prudence are on the two most distant Frazer Lines of Archibald and James.
It is interesting to look at the autosomal matrix for the Frazers as the higher number indicate family groupings. Overlaps in the families where Frazer cousins married cause even higher cMs in the matches.
A focus on the Frazer/Stinson TGs helped shore up that line of the Frazers. In cases where a TG could be from one line or the other, the addition of a Frazer/Stinson only Line tester gave more evidence that those TGs were more clearly in the Frazer/Stinson Line.
I did some Chromosome mapping based on the TGs. The TGs gave clear indications of crossovers. However, it was not always clear as to which generation we were mapping to as far as specific ancestors.
Here is an update of the Frazer TG Matrix: