Haplogroup I2

Y-DNA (paternal line) · one of the I lineages

An old European hunter-gatherer lineage; dominant in Mesolithic and Neolithic Britain before the Bronze Age. [isogg][aadr][yfull]

The British record

Estimated age of the lineage: ~20,900 years (TMRCA). Explore the full deep subtree (I-L460) at YFull → — the live, SNP-level tree where you can drill down to your own terminal subclade. [yfull]

In the ancient British record

Frequency of I2 among ancient male samples from Britain & Ireland, by period — from our aggregation of the CC0 Allen Ancient DNA Resource. See the full chart.

Bronze Age 12%
Early Medieval 8%
Iron Age 4%
Medieval+ 1%
Mesolithic 83%
Neolithic 93%
Roman 8%

Fuller account: I2 on Wikipedia.

Remember: a haplogroup is a deep, broad lineage shared by many people — not an ethnicity, a nationality or a clan. See what DNA can and can’t tell you.

Sources

[isogg] International Society of Genetic Genealogy (ISOGG), Y-DNA Haplogroup Tree. Reference — cite for haplogroup nomenclature only (not frequencies) · link
[aadr] Allen Ancient DNA Resource (AADR) v66, Mallick & Reich (Harvard), doi:10.7910/DVN/FFIDCW. CC0 1.0 (public domain dedication) · link
[yfull] YFull YTree (github.com/YFullTeam/YTree) — a phylogenetic Y-chromosome tree with age estimates. CC BY 4.0 (attribution required) · link