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Yeah, Y-DNA is a different animal. There is no recombination or admixture, but rather a string of mutations (SNPs), occurring on a semi-regular basis along a single timeline, that are passed down...

More likely in the Balkans, then likely spread east to Ukraine and west to Italy. Your guys look to have taken the Grand Tour - going east, then west., then north, then south... At least you weren't...

Splits (FTDNA Haplotree):

M223 > P222 > CTS616 >
1) CTS10057 (1,047 branches) - your branch to A427, etc.
2) FGC15071 (589 branches) - my branch to M284, L126, Isles Scot/Ire, etc.

CTS10057...

17K years ago, we would still have been in the Epigravettian Refugium (encompassing the Balkans, Italy, etc.).

https://www.sciencedirect.com/science/article/pii/S0277379121003942
...

There are a bunch of samples with Stewart/Steward/Stuart surnames at A427>S23897>S23612>Y5362>Y5360>Y5369. The surname came from Walter fitz Alan, a Norman noble who was the High Steward of Scotland...

My current thinking is that the Isles Scot-Ire clade goes back to a remnant pre-Celtic population that survived the Bell Beakers in a refugium in the Western Isles, dating back to the...

You're in the Basics Pioneer group: M223>P222>Y6098*, S20825*. See: https://www.familytreedna.com/groups/m223-y-clan/about/results

Many samples in that area of the tree trace back to Spain and...

I have a very "Irish" surname (although I am only 13% Irish on the Autosomal), but have a lot of "Scottish" Big Y matches, including Islanders, Highlanders, Lowlanders, and Border Reivers. So, when I...

Yes, the main reason to do FTDNA's Autosomal and mtDNA tests is to find matches among FTDNA's database of testers. I didn't find them to be particularly helpful. YDNA is FTDNA's strong suit.

You...

The Big Y-700 is a stand-alone test. It is entirely separate from and won't add anything to your Autosomal or mtDNA results. It is currently on sale for $379 (reg. $449, so a $70 saving) through...

Maciamo calls U2 "rare" and "ancient", with low numbers spread thinly across Europe, with ancient samples dating back to the Cro-Magnons, etc.

U2e is "found in most of Europe and Central Asia /...

I believe it has to do with the vulnerability of a "native" culture to depredation from the majority "national" culture, and the recognition that it has a valuable part of the culture as a whole and,...

The Neolithic Megalithic Culture jn Britain would have had little to no resistance. Earlier instances could have been brought in by traders, but likely would have impacted only coastal trading...

From Wade Kotter in the I-M223 Y-DNA Haplogroup Activity Feed:



https://www.familytreedna.com/groups/m223-y-clan/activity-feed

An ancient I-L126 sample (I2655, 3311ybp/1311bce) was found at...

I suspect that there was a mixed economy (of farming, herding, hunting/fishing, and gathering) in much of neolithic Britain and Ireland, rather than intensive agriculture. While horses were brought...

I have one Big Y match off of I-S7753/Y4171 (TMRCA 1900ybp/100CE), and eight off of I-Y4142 (TMRCA 1600ybp/400CE). Then 127 matches off of Y4751 (TMRCA 1550ybp/450CE). Many of these matches are...

The males in this study are negative for I-L126, so branch-off one-step above. Only one ancient I-L126 sample has been found in the British Isles - on the Isle of Lewis (Outer Hebrides).

See:
A high-resolution picture of kinship practices in an Early Neolithic tombhttps://www.nature.com/articles/s41586-021-04241-4 (Published: 22 December 2021)



Supplementary Table I: The...

I2a Y-DNA WHG's dominated Europe in the Paleolithic and Mesolithic - they emerged from the Epigravettian Refugium in the modern-day Balkans, following the retreating ice sheets.
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I want to defend use of this map (I2a2) against criticism (that it is "out of date") in the I-M223 Project's Activity Feed, but don't have a reply other than "a map is as good as the mapmaker."

My...

Y4142 is dated 1900 - 1600 ybp (100 - 400 ce), which is basically the Roman era in Britain.

**Y4142 - F. Soden
Y36593 - W. McPherson (William McPherson B. 1774 SCT, D. abt 1821 PQ CAN) ...

I got strong pushback on the I-M223 Project's Activity Feed at FTDNA when I referred to Maciamo's I2a2a/i2a1b (P214) YDNA Map:



Note that Maciamo states that M223 is 90% of P214. In FTDNA's own...

More than just "Southern Picts", but a broader Pictish-Brythonic ancestry (Big Y/YFull SNP matches) including

1) Isles: Macdonald, MacNeil, Morrison;
2) Highlands: Clan Chattan (McPherson,...

The Montgomery clan chiefs belong to J2a1-L26: https://www.eupedia.com/europe/Haplogroup_J2_Y-DNA.shtml#famous_people

I agree that it doesn't matter, particularly in regards to "identity". I have...

If they became geographically isolated from the more southern Brythonic groups, the speech of both would have diverged. If *w- was a retention, could it have been from an earlier stage of Brythonic...