Major new branch in I-L233 "Western": 2020-04-02 draft tree

Click here to download our 2020-04-02 draft tree for I-L233 

For reasons of space we have created a new tree for the large I-Y4252 branch. We already have a tree for the smaller I-A8462 branch, and additional trees for subbranches of I-Y4252 and I-A8462.
Click here to find our new tree for I-Y4252

This update shows a major discovery in the I-L233 haplogroup. Until now, all known L233+ men have been either A8462+ or Y4252+. But a recent Big Y-700 result was L233+ and A8462- Y4252-. He was also Y4197- FGC56775- FGC80022- Y4258-, previously these SNPs had been considered equivalent to L233. He was derived (positive) for approximately 121 SNPs that are still considered equivalent to L233.

I-L233 now has two child branches: I-Y4197 with 148 Big Y samples and I-L233* with 1 Big Y sample. And I-Y4197 has two child branches: I-A8462 and I-Y4252. Previously I-L233 was the immediate parent of of  I-A8462 and I-Y4252.

The new I-L233* sample has Scottish ancestry and he shares a few distinctive marker values with some other I-L233. They all probably have paternal ancestry from Scotland or northern England

The characteristic marker values of the L233+ Y4197- group are:
Y-GATA-H4=9 (normal value for I-L233 is 10)
DYS464=11-14-15-15 (normal value for I-L233 is 11-14-14-15)
DYF395S1=16-16 (normal value for I-L233 is 16-17)
DYS617=13 (normal value for I-L233 is 14)
DYS434=9 (normal value for I-L233 is 10)

Of course it's possible that there are additional L233+ Y4197- men with different marker patterns. But based on many previous Big Ys, SNP packs, SNP panels, Genographic 2.0 tests, individual SNP tests, almost all L233+ men are Y4197+ and belong to either A8462+ or Y4252+ (most of them belong to Y4252+).

At FTDNA's I-P37 project, you will see some people with I-Y4197 results on our Y-DNA classic and colorized STR results pages, these people did a version of the Genographic 2.0 test that included Y4197.


Click here to find our previous tree for I-L233 which included information on I-Y4252

Click here to for a brief description of the I-L233 haplogroup