Haplogroup G-CTS10391
G-CTS10391 is a branch of the FamilyTreeDNA Y tree with 113 kits that gave a country, counting all sub-branches. Stands out most: Switzerland (0.4%), Germany (0.1%), England (0.1%). The branch's common ancestor lived about 3,700 years ago: the FTDNA Discover estimate runs from 3,100 to 4,300 years ago.
Belongs to the G-P303 branch, which has a note.
This branch on other trees: FTDNA Discover ↗
Branch SNPs: 1 · YFull nodes: 0
CTS10391
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.
PalaeolithicMesolithicNeolithicChalcolithicBronze AgeIron AgeMiddle AgesModern eraMinus means BCE; epoch boundaries are conventional.
Ancient samples of the branch and its subclades with a date and a find site, from FamilyTreeDNA Discover, 9 in all. The slider picks the years; the older the era, the wider the window.
| Country / region | kits | Share of branch | Share of country |
|---|---|---|---|
| England | 20 | <0.1% | |
| United States | 20 | <0.1% | |
| Germany | 15 | <0.1% | |
| Switzerland | 12 | 0.4% | |
| Ireland | 9 | <0.1% | |
| United Kingdom | 6 | <0.1% | |
| France | 5 | <0.1% | |
| Italy | 4 | 4 of 6,033 | |
| Netherlands | 4 | 4 of 2,311 | |
| Czech Republic | 3 | 3 of 2,371 | |
| Belgium | 2 | 2 of 712 | |
| Canada | 2 | 2 of 1,661 | |
| Northern Ireland | 2 | 2 of 2,984 | |
| Sweden | 2 | 2 of 12,231 | |
| Belgium (Flanders)Belgium | 1 | 1 of 98 | |
| Brazil | 1 | 1 of 735 | |
| Lithuania | 1 | 1 of 1,867 | |
| Luxembourg | 1 | 1 of 130 | |
| Poland | 1 | 1 of 7,410 | |
| Portugal | 1 | 1 of 1,914 | |
| Trinidad and Tobago | 1 | 1 of 64 |
Sub-branches #
Sub-branches that have their own page (50 kits or more), as a tree: every direct one, nested ones from 1% of the branch's kits. The bar is the kits in the sub-branch with its own sub-branches; the age is when its common ancestor lived.
On the branch itself, without a resolved sub-branch: 5 kits.
How old the branch is, by source #
Each source's estimate on one scale, in years ago. A dot is the estimate, a bar its spread (a 95% interval for YFull); no bar means the source publishes no spread. The “common ancestor” rows show when the last common ancestor of all carriers lived, the “split” rows when the branch broke off from its parent. Discover does not estimate the split, so its row shows the age of the parent branch itself.
Thickness against the parent: by ancient samples ×1.0, by living carriers ×1.0: seen then and now. All such splits on a map
How the branch grew #
How many sub-branches already existed at each moment: a sub-branch counts from the time its common ancestor lived (FamilyTreeDNA Discover estimates). Sub-branches with a known age: 79.
explosive growth: the number of sub-branches doubles in under 400 yearsgrowth: the number doubles in 400–1,500 yearsstagnation: no doubling within 1,500 yearsgrey: fewer than 5 sub-branches at the start of a stretch — too little to tell the rate
The branch grew fastest 3,000–2,500 years ago: its sub-branches went from 15 to 21.
Sub-branches of the last centuries show up only where many relatives have tested, so the right end of the curve says more about who took a test than about population growth.
New this month #
FTDNA: how much the kit count grew between the tree copies of 2026-10-09 and 2026-11-12. A kit that moved to a new sub-branch after refinement is not counted as new. YFull: samples YFull itself marks as new, in the copy of 2026-11-02; YFull drops the mark after a few weeks.
By sub-branch
- G-S23438: +18
New Y-DNA samples in YFull
- G-FT421476 · England
Surnames #
Surnames that testers entered at FTDNA, over the whole branch with its sub-branches: 5 distinct among 17 kits. FTDNA gives surnames per branch only, with no country attached, so they cannot be split by country.
- Howard 9
- Bennett 2
- Davidson 2
- Johnston 2
- Tobin 2
Ancient samples in the branch #
10 samples from excavations belong to this branch or its subbranches. Source: FamilyTreeDNA Discover. “?” means Discover is unsure of the sample's place on the tree. 7 of 10 samples are marked.
A dot is a sample, a line is the range it is dated to, the colour is its culture. A hollow dot: its placement on the tree is uncertain. The dashed line is the branch's common ancestor as FTDNA Discover estimates it.
The oldest
- 515 BCE · Hallstatt culture, Germany G-S23438 ?
- 288 BCE · Iron Age British, England G-S23438 ?
- 269 BCE · Arras culture, England G-S18765 ?
- 225 BCE · Arras culture, England G-S23438 ?
- 220 CE · Roman Age Balkan, Croatia G-FT421476
- 375 CE · Roman Age Pannonian, Hungary G-S23438 ?
- 600 CE · Medieval German, Germany G-S23438 ?
- 600 CE · Medieval German, Germany G-S23438 ?
Data on this page: FamilyTreeDNA Y tree, 12 November 2026: 113 kits.
How to cite: ftdnastat, "Haplogroup G-CTS10391: age, countries, sub-branches", https://ftdnastat.github.io/en/clade/g-cts10391/, data of 2026-11-14, build 20261114-18dba71.
The data is licensed under CC BY 4.0: take it, rework it, just credit ftdnastat.