R-Z255
Equivalent branches, the same kits: R-Z16423 (1,604 kits, 4,300 years)
R-Z255 is a branch of the FamilyTreeDNA Y tree with 1,604 kits that gave a country, counting all sub-branches. It is most common in these samples: Ireland (3.7% of kits), Isle of Man (2.1% of kits), Canada (First Nations) (2.0% of kits). The branch's common ancestor lived about 2,100 years ago: the FTDNA Discover estimate runs from 1,800 to 2,500 years ago. The oldest of the equivalent branches, R-Z16423, split off about 4,300 years ago by Discover. YFull has 137 samples in this branch and dates its common ancestor to 1,700 years ago.
Where it is found #
Countries and regions given by the branch's carriers. “Share of branch” is the part of the branch's kits that belongs to the country. “Share of country” is the part of that country's kits that falls into the branch; it is computed only for countries with at least 50 kits.
| Country / region | kits | Share of branch | Share of country |
|---|---|---|---|
| Ireland | 820 | 3.7% | |
| United States | 274 | 0.9% | |
| England | 159 | 0.6% | |
| Scotland | 137 | 1.0% | |
| United Kingdom | 64 | 0.7% | |
| Northern Ireland | 43 | 1.4% | |
| Wales | 23 | 1.0% | |
| Canada | 16 | 1.0% | |
| Norway | 12 | 0.3% | |
| Sweden | 8 | <0.1% | |
| France | 7 | 0.1% | |
| Germany | 7 | <0.1% | |
| Australia | 6 | 1.6% | |
| United States (Native American)United States | 4 | 0.2% | |
| Isle of Man | 3 | 2.1% | |
| Scotland (Shetland)Scotland | 3 | · | |
| Hungary | 2 | 0.1% | |
| Austria | 1 | <0.1% | |
| Barbados | 1 | 1.2% | |
| Cameroon | 1 | 0.4% |
13 more
The remaining countries and regions (13), 13 kits in total: Canada (First Nations) 1, Grenada 1, Iceland 1, Italy 1, Italy (Sicily) 1, Jamaica 1, Netherlands 1, New Zealand 1, Philippines 1, Poland 1, Russian Federation 1, Spain 1, Vietnam 1.
Sub-branches #
Sub-branches that have their own page (50 kits or more). The bar is the kits in the sub-branch with its own sub-branches; the age is when its common ancestor lived.
1 small sub-branch more without a page: 4 kits. On the branch itself, without a resolved sub-branch: 467 kits.
Surnames #
Surnames that testers entered at FTDNA, over the whole branch with its sub-branches: 148 distinct among 664 kits. FTDNA gives surnames per branch only, with no country attached, so they cannot be split by country.
- Murphy 41
- Doty 27
- Burns 19
- Myrick 18
- Phelps 18
- Byrne 15
- Gaston 15
- Sullivan 14
- Beatty 11
- Doyle 11
- Quigley 11
- Fitzpatrick 10
- Gleeson 10
- Martin 10
- Beaty 9
The same branch on YFull #
YFull builds its tree from the same SNPs; the node is matched by name or by a shared SNP. TMRCA is when the common ancestor of all samples lived, formed is when the branch split from its parent. Intervals are 95%.
R-Z255: 137 samples. The common ancestor lived 1,700 years ago (1,500–2,000); the branch split off 4,100 years ago (3,800–4,300).
In the site's findings #
- Distinctive branch for Ireland: 3.7% of kits, 6.3 times the world share