Thanks to a new Big Y, we now have information about a new branch that's approximately 3,000 years old, it's called I-A20341. In total 9 or 10 SNPs define this branch. Two of them are available for individual testing at YSeq.net: A20341 and A20342. Another SNP occurred independently in the I1 haplogroup: A18076
There have been two Big Ys for I-A20341:
--a Canadian man with paternal ancestry from Portugal, he has no STR marker matches
--an American man with paternal ancestry from southwestern Germany. He has several STR matches who have ancestry from Germany and Switzerland, including some men born in Switzerland
There is also a Mexican-American family with markers that show similarities to the German/Swiss group
More than 10 years ago, Ken Nordtvedt identified a distinctive cluster within M26 that was characterized by the distinctive marker value DYS391=9 (almost everyone in I-M26 has DYS391=10). When 37 and 67 marker tests became more common we learned that this cluster has additional characteristic marker values, especially DYS425=0. He called this cluster M26-"France".
After a few Big Ys and individual SNP tests, we saw this pattern:
I-M26 people with DYS391=10, and DYS425=0 belonged to the I-Y14720 haplogroup
And I-M26 people with DYS391=9, and DYS425=0 belonged to I-Y14720, and also belonged to the more specific I-Y15460 haplogroup.
But now we have a Big Y for someone with DYS391=9, and DYS425=0, and he is Y14720+ Y15460-. He shares 4 SNPs with two previous Big Ys. The new I-Y63435 branch is shown in red on the updated haplotree.
Most I-Y14720 men have DYS391=9 and are Y15460+. But this new result shows us that we can't always predict Y15460 results: some I-Y14720 men who have DYS391=9 are Y15460- and Y63435+.
In our last update, we mentioned the first known man with PF4135+ and Y11772-, A11374- and A13665-, Y31631- results.
Now a second man has completed a Big Y and he has the same results. The two man share one additional SNP called FGC39003. (This SNP was found in 2014, it occurred independently in haplogroup G).
We can now name a fourth branch of I-PF4135: I-FGC39003. The two known families in I-FGC39003 aren't closely related based on the number of variants unique to each family. One of the families is from southern County Tipperary, Ireland, which is consistent with an overall origin of the I-PF4135 haplogroup in the County Cork area of Ireland.
I-Z113 is one of the largest branches in all of I-M26. I-Z113 is found in Spain, Portugal, France and Britain and it had a common ancestor very recently, approximately 1750 years ago according to YFull's calculation.
There is a new branch of I-Z113 called I-SK678. The two known families in I-SK678 have ancestry from New Mexico, USA and Mexico but their common ancestor lived over 500 years ago in Spain or elsewhere in Europe.
1) There is a third Big Y for the I-FGC8393 branch, I think they probably all have English paternal ancestry ultimately. Based on two results, YFull calculates that the common ancestor lived 750 years ago. The third result has 15 unique novel variants, which probably means the common ancestor lived even longer ago.
Two of the three results share the A20029 SNP and these two are slightly closer relatives. This SNP is unsuitable for individual testing
2) Until now there was large block of 23 SNPs shared by all members of the "Isles-B1" group. The common ancestor lived 1200 years ago according to YFull's estimate, and known members live in the US, Canada and England.
Now we have a Big Y result for a Swedish-American man. He is derived for 16 of the 23 SNPs, but he is ancestral for 7 others. He has 25 unique novel variants, so he is very distantly related to the English branch.
There are only few known members of I-L161 with paternal origin from outside Great Britain and Ireland (more precisely, the British/Irish haplogroup is I-S2639, which is slightly more specific than I-L161). But when we see I-S2639 men with continental European ancestry, they often are S2703+ S2742+, like the Swedish-American man. (These other European men haven't done Big Y or extensive SNP testing).
An American man whose country of origin is unknown (German or Irish?) belongs to I-A7111 and shares a variant with a Polish-American man: 20072181 T to G. However, this variant occurs in a repeat region and it's considered unreliable for phylogeny.
A new Big Y result is FGC56815+ and additionally shares the FGC56855 SNP with a previous Big Y.
On our previous tree we introduced the I-A19384 branch, containing three samples. On this tree we show that two of the samples are additionally Y82374+ and Y90935+. One of these men is Scottish/Irish-American and the other is French Canadian.
Finally we show a third result in the I-F25958 branch, and a more specific I-Y96354 branch. All three men likely have ultimate paternal ancestry from Scotland, and they have two different surnames. The results for Y96354 indicate that one surname is maybe a descendant of the other, with a name change at some point. But the younger surname is not very young--the man who did Big Y has multiple STR marker matches with men of his own surname, representing different immigrant ancestors to the US/Canada.
There are three main branches in the I-PF4135 haplogroup. But a new Big Y result doesn't belong to any of these branches: he has Y11772-, A11374- and A13665-, Y31631- results. He has paternal ancestry from south County Tipperary, Ireland which is near County Cork. I-Y11772, I-A11374 and I-A13665 (I-Y31631) all contain men with County Cork ancestry.
This tree also shows two new Big Y results for the very old Driscoll family: one is I-Y13664* and the other is I-A14359*.