Don’s Frazer DNA

I recently had an email from Ros introducing me to her 3rd cousin Don. Don is a Frazer descendant and genealogist who had recently taken an autosomal DNA test. Both Ros and Don are from Australia. I am happy to write a Blog about Don and his DNA. Unfortunately, due to a storm here in Massachusetts, our power is out. No problem, I can use my laptop. However, I had to figure out to connect to the internet through my cell phone. Now I know how to do that.

Before the electricity went out, I checked Gedmatch and Don matches my sister Lori.

This is quite interesting as I have mapped out the DNA for myself and 4 of my siblings. Lori is the only one out of 5 tested siblings that has Frazer DNA in that area of Chromosome 13. The map shows how we got the DNA from our four grandparents. Our grandparent of interest to this group is Frazer.

The others siblings have mostly or all Hartley DNA on their paternal sides. Also Lori was the last sibling that was tested. This points out the importance of testing siblings.

Here is the line that Don is on:

As Don is a 3rd cousin to Ros, that means that he descends from John Parker Frazer and Honora White on the left purple line. My sister Lori isn’t even on this line. She descends from a Frazer one layer up making her a 6th cousin to Don. That is quite a way back for DNA to be working, so that’s pretty good. Put another way, Lori and Don’s common Frazer ancestor is 7 generations away.

Don’s Frazer/Stinson Line DNA Matches

Don’s closest relative on the Frazer/Stinson DNA chart above is Vivien. She is a second cousin once removed to Don. Vivien is also Don’s top match on his ‘One to Many’ list at Gedmatch.

Don and Vivien’s common ancestors John Parker Frazer and Honora White are actually 3.5 generations away. That is, 3 generations from Vivien and 4 from Don average out to 3.5 generations. Gedmatch shows that the common ancestor by DNA is 3.4 generations away. That means that Don and Vivien share a slightly less amount of DNA than average. I would expect that about half of the DNA they share would be Frazer DNA and half would be Frazer DNA.  One odd thing was that I didn’t see Vivien’s daughter Jean on Don’s list of DNA matches.

don and ros

The next person on Don’s ‘One to Many’ list is Ros. By that list, it looks like they share 28 cM of DNA/ However when I choose the actual match, it shows that they share much less DNA than that for some reason:

An average amount of DNA shared between 3rd cousins is 74 cM, so that raises some questions. Did Ros just get a lot less than average (which is possible) or perhaps there was a second marriage for one the ancestors in common or other explanation.

don and michael

Based on the chart above, Don and Michael are 4th cousins, once removed.

Note that Don and Michael share a segment on Chromosome 7. This is the same segment that Don and Vivien shared. That would mean that Don and Michael would have gotten this DNA from either Archibald Frazer, b. 1778 or Ann Stinson. That is pretty old DNA.

The New and Improved Frazer Autosomal Matrix

I made some changes to the Frazer Autosomal DNA Matrix

I tried to put the Matrix more in line with what I think the genealogy is.

  • Heidi through Gladys descend from Violet and James Frazer. Violet is the daughter of Richard. James father is unknown, but I have put him as a son of Philip Frazer as a likely candidate.
  • Patricia, Susan, Bill and Gladys under that scenario descend from all three sons in the Archibald Line: Philip, Richard and Archibald (who married Ann Stinson).
  • I have Michael and Jane descending from Richard and Archibald
  • Cathy through Don descend only from the Archibald that married Ann Stinson.

Don’s Triangulation Group (TG) Matrix

Here I have added Don to the existing Frazer DNA TG Matrix.

Don is in two Triangulation Groups. The first one I already had with Michael, Vivien and Janet.

I took Michael from the Richard Line as I don’t know if the match is with him there or in the Archibald/Stinson Line. I don’t know for sure that the common ancestor that the DNA is identifying is the original Frazer couple in Ireland or someone else. A good candidate for the ‘someone else’ would be anywhere there is an unnamed spouse in the direct ancestry.

The second TG is new and is with Pat and Susan.

This seems more straightforward than the previous TG. However, this TG could represent a common ancestor a generation earlier as the yellow family above also descends from the Richard Frazer line (brother of the Archibald above). However, that would be less likely than the above scenario.

Don’s YDNA

Don hasn’t tested for YDNA, but as a direct Frazer descendant, he would be a good candidate for it. So far, three Irish Frazers from our DNA study roup have taken the YDNA STR test. Two have been from the Archibald Line and one from the James Line. These lines go back to the early 1700’s in Ireland. The most recent STR tree that I drew for the Irish Frazers is here:

That STR tree reflects this genealogical tree:

Right now the STRs 391=11 and CDYa = 45-50 define the Archibald Frazer born about 1715 Line. The STR 444 = 13 that Rick has defines the Richard Patterson Frazer b. 1830 Line. The STR 576 = 19 defines the George Frazer b. 1838 Line. If Don were to test his YDNA STRs, that would define the line of Archibald Frazer b. about 1778 who married Ann Stinson Line.

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