R-DF21
R-DF21 is a branch of the FamilyTreeDNA Y tree with 4,119 kits that gave a country, counting all sub-branches. It is most common in these samples: Ireland (6.7% of kits), Isle of Man (5.6% of kits), Australia (5.2% of kits). The branch's common ancestor lived about 4,400 years ago: the FTDNA Discover estimate runs from 3,800 to 5,000 years ago. YFull has 437 samples in this branch and dates its common ancestor to 4,100 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 | 1,497 | 6.7% | |
| United States | 843 | 2.7% | |
| Scotland | 621 | 4.4% | |
| England | 422 | 1.5% | |
| United Kingdom | 197 | 2.0% | |
| Northern Ireland | 150 | 5.1% | |
| Wales | 68 | 3.1% | |
| France | 45 | 0.7% | |
| Sweden | 44 | 0.4% | |
| Canada | 34 | 2.1% | |
| Germany | 32 | 0.2% | |
| Norway | 24 | 0.5% | |
| Australia | 19 | 5.2% | |
| United States (Native American)United States | 18 | 1.0% | |
| Italy | 13 | 0.2% | |
| Finland | 11 | 0.1% | |
| Isle of Man | 8 | 5.6% | |
| Puerto Rico | 7 | 1.2% | |
| Spain | 7 | 0.2% | |
| Belgium | 5 | 0.7% |
26 more
The remaining countries and regions (26), 54 kits in total: England (Cornish) 5, Denmark 4, Netherlands 4, Scotland (Shetland) 4, Brazil 3, New Zealand 3, Scotland (Orkney) 3, South Africa 3, India 2, Jamaica 2, Portugal 2, Saint Kitts and Nevis 2, Spain (Murcia) 2, Switzerland 2, Trinidad and Tobago 2, Barbados 1, Colombia 1, El Salvador 1, Fiji 1, Greece 1, Italy (Sardinia) 1, Mexico 1, Poland 1, Russian Federation 1, Slovenia 1, Turkey 1.
Most common among these peoples #
From YFull samples that gave a mother tongue: the part of a people's samples that falls into this branch. Peoples with at least 3 samples in the branch are listed.
- English: 3.6% of samples (38 of 1,050)
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.
3 small sub-branches more without a page: 9 kits. On the branch itself, without a resolved sub-branch: 369 kits.
Surnames #
Surnames that testers entered at FTDNA, over the whole branch with its sub-branches: 333 distinct among 1,444 kits. FTDNA gives surnames per branch only, with no country attached, so they cannot be split by country.
- Moore 63
- Montgomery 37
- McCarthy 36
- Hall 33
- Boggs 27
- Carroll 17
- Ferguson 17
- McDonald 17
- Duffy 16
- McMahon 16
- Lewis 15
- Smith 15
- Jones 13
- McDaniel 13
- Wright 13
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-DF21: 437 samples. The common ancestor lived 4,100 years ago (3,800–4,300); the branch split off 4,100 years ago (3,800–4,300).
In the site's findings #
- Distinctive branch for Australia: 5.2% of kits, 3.5 times the world share