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Major update reorganizes entire haplogroup I2 tree

Friday, October 25, 2019

Another major British branch below I-PF4189: 2019-10-24 tree for I-CTS11338

Click here to download our 2019-10-24 tree for I-CTS11338

I-PF4189 is a major branch of the I-M26 halogroup. It's well known that I-M26 is very common in Sardinia, approximately 35-40% of men in Sardinia belong to I-M26. But of the I-M26 men in Sardinia, approximately 75% belong to I-PF4189, more specifically to I-PF4190. Very few men from other parts of Europe belong to I-PF4190, we have found several from Germany, one from France, and one family from Ireland (likely Norman or other Continental European ancestry hundreds of years ago).

You can see on this draft tree that I-PF4189 has three known child branches:
I-PF4190 (see paragraph above)
I-A19487
I-A12373

I-A19487 and I-A12373 both have only British origin, according to current knowledge. But Great Britain and Ireland are much better sampled than other parts of the world, and maybe we will find additional samples in other countries.

This tree includes a new branch below I-A19487, it's called I-BY67299. This branch includes Scottish-origin families including some named Barclay, and it's most recent common ancestor with the rest of I-A19487 lived approximately 3,000 years ago.

Click here to find our previous tree for I-CTS11338
Click here for a brief description of the I-CTS11338 haplogroup



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