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FTDNA Y-tree branch

I-CTS8647

I-CTS8647 is a branch of the FamilyTreeDNA Y tree with 5,849 kits that gave a country, counting all sub-branches. Almost all of its kits sit in a single sub-branch, I-Z61, so this branch gets no conclusions of its own. It is most common in these samples: Sweden (11% of kits), Isle of Man (9.1% of kits), Norway (7.6% of kits). The branch's common ancestor lived about 4,300 years ago: the FTDNA Discover estimate runs from 3,700 to 4,900 years ago. YFull has 1,318 samples in this branch and dates its common ancestor to 4,300 years ago.

5,849
kits in the branch
with a country given, including all sub-branches
49
on the branch itself
kits whose test did not resolve a sub-branch
22%
Big Y
share of kits with a Big Y test among all kits of the branch, sub-branches included
3
sub-branches
1 with their own page, 2 without
4,300 years
age by Discover
the common ancestor lived 3,700 to 4,900 years ago
4,300 years
age by YFull
common ancestor (TMRCA); the branch split from its parent 4,300 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.

Where it is found
Country / region kits Share of branch Share of country
Sweden 1,381 11%
England 732 2.6%
United States 713 2.3%
Germany 603 3.4%
Scotland 352 2.5%
Norway 346 7.6%
United Kingdom 265 2.7%
Ireland 246 1.1%
Finland 217 2.2%
Netherlands 95 4.1%
France 94 1.5%
Denmark 93 5.7%
Poland 90 1.2%
Switzerland 72 2.4%
Russian Federation 70 1.0%
Northern Ireland 54 1.8%
Portugal 32 1.7%
Czech Republic 29 1.2%
Italy 28 0.5%
Canada 27 1.6%
60 more

The remaining countries and regions (60), 310 kits in total: Ukraine 23, Wales 22, Belgium 19, United States (Native American) 16, Hungary 15, Austria 14, Isle of Man 13, Spain 13, Puerto Rico 11, Slovenia 11, Belarus 10, England (Cornish) 8, Mexico 8, Romania 8, South Africa 8, Australia 7, Belgium (Flanders) 6, Brazil 6, Bulgaria 6, Lithuania 6, Azerbaijan 5, France (Alsace) 5, Jamaica 5, Colombia 4, Estonia 4, New Zealand 4, Portugal (Azores) 4, Slovakia 4, Turkey 4, Barbados 3, Bahamas 2, Belgium (Wallonia) 2, Iceland 2, Indonesia 2, Luxembourg 2, Russia (Republic of Bashkortostan) 2, Sápmi (Sámi) 2, Spain (Galicia) 2, Costa Rica 1, Cuba 1, Egypt 1, Guinea 1, Guyana 1, India 1, Orstkhoy (reported as Italy · Aosta Valley) 1, Italy (Friuli-Venezia Giulia) 1, Italy (Sicily) 1, Kazakhstan 1, Latvia 1, Morocco 1, Netherlands Antilles 1, Norfolk Island 1, Peru 1, Russia (Republic of Kabardino-Balkaria) 1, Russia (Republic of Mordovia) 1, Scotland (Orkney) 1, Spain (Andalusia) 1, Suriname 1, Trinidad and Tobago 1, US Virgin Islands 1.

YFull

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.

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.

I-Z61
5,769 · 98.6% 4,200 years

2 small sub-branches more without a page: 31 kits. On the branch itself, without a resolved sub-branch: 49 kits.

Surnames #

Surnames that testers entered at FTDNA, over the whole branch with its sub-branches: 253 distinct among 1,008 kits. FTDNA gives surnames per branch only, with no country attached, so they cannot be split by country.

YFull

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%.

I-CTS8647: 1,318 samples. The common ancestor lived 4,300 years ago (3,700–5,000); the branch split off 4,300 years ago (3,700–5,000).