Isles-C3 shares a SNP with Isles-C2: updated I-Y3723 tree

Click here to download our most recent draft tree for I-Y3723

I-Y3723 is the biggest branch of I-L161 "Isles", and I-Y3723 contains two large branches that are especially typical of central-western Ireland:
I-Y5455 (Isles-C and all of its branches: Isles-C1, C2, C3)
I-Y4665 (Isles-D2)

According to YFull's calculation, I-Y5455 had a common ancestor who lived approximately 2100 years ago. I-Y5455 contains some fairly large subbranches with a more recent common ancestor: Isles-C2 (which again is especially typical of central-western Ireland), and then some individual families who have no close relatives, these families are found in mostly in central-western Ireland and with a few from elsewhere in Ireland and Scotland.

A few years ago we named a new branch called Isles-C3. Why did we name this particular branch? Because some of our members in the I-P37 project wanted a name for their branch. Unfortunately there was no known SNP name for their branch, because they didn't do Big Ys. So we defined the Isles-C groups as follows:
Isles-C1: Y5455+ A7729+ (3 Big Ys)
Isles-C2: Y5455+ Y5451+ (6 Big Ys). Isles-C2 can be easily identified by the distinctive marker values DYS392=12 (in addition to all of the other markers that are typical of Isles-C)
Isles-C3: Y5455+ A7729- Y5451-

Now we have the first Big Y for Isles-C3. He is Y5455+ and A7729- Y5451- as expected. But he shares one SNP with the I-Y5451 (Isles-C2) branch. This SNP is called Y5452 and it's shown in red on the updated haplotree.  The person who did Big Y has paternal ancestry from County Longford, Ireland.

The Y5452 test is available at YSeq.net and one Isles-C3 man with Scottish paternal ancestry ordered the Y5452 test last week, and he received Y5452+ results yesterday. Of course, maybe some Y5455+ A7729- Y5451- people will be Y5452-.

In my opinion, this Big Y is consistent with a rapid expansion of the I-Y5455 (Isles-C) branch as a whole, approximately 2100 years ago, and probably in central-western Ireland. This Big Y shows that the Isles-C3 branch and the Scottish members of Isles-C3 have close ties to the rest of Isles-C.

Click here to find our previous tree for I-Y3723