I2a

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Y-DNA

I2a

Last reviewed: 2026-04-06

Phylogeny alignment: Public ISOGG and YFull trees at last editorial review; SNP labels and branches change over time.

View on atlas mapMap + Historical peoples (macro)Compare two lineages

What this may suggest

  • Models often emphasize southeast-to-northwest medieval mobility in parts of Europe; treat as medium confidence at coarse geography only.

Important note

  • • One direct lineage only — not your full ancestry.

Overview

I2a subclades appear in many contexts; some frames tie certain branches to medieval Slavic expansions, but overlap is messy. For eastern-route storylines in Norman Atlas (Varangian / Dnieper imagination), I2a may appear as part of the wider mixing zones—not as a “Rus haplogroup.”

Migration story

Models often emphasize southeast-to-northwest medieval mobility in parts of Europe; treat as medium confidence at coarse geography only.

Norman Atlas — possible relevance

  • ◇Eastern Baltic / Slavic-zone historiography may offer useful comparisons.
  • ◇Broad steppe and river-trade imaginaries — high uncertainty at individual level.

Linked regions (careful wording)

  • kievan-rus-zonepossible-link
    • Allen Ancient DNA Resource (AADR) — Harvard Reich labdatabaseOpen link
    • EMBL-EBI — introduction to human haplogroupsreviewOpen link
    • Norman Atlas synthesis notesynthesisAtlas editorial synthesis — verify claims against current phylogenetic trees and open ancient-DNA compendia.

Related peoples & historical layers

No group here “maps to” your haplogroup — these are atlas entries for further reading.

  • Franks

    Frankish peoples and successors; dominant in northern continental corridors from late antiquity through the Carolingian period.

    See the Historical peoples (macro) layer on the map — not the same as genetics.

Atlas regions

  • Kievan Rus

Journeys

Stories

Branch navigation

No subclades listed in this seed dataset.

Interpretation & confidence

  • • Haplogroups trace one paternal (Y-DNA) or one maternal (mtDNA) line—not full ancestry, culture, or identity.
  • • Wording stays probabilistic: “associated with”, “found among”, “may connect to”, “possible historical relevance.”
  • • Confidence labels and sources belong on regional or migratory claims; broad labels alone are never proof.

Bibliography & public references

  • ISOGG Y-DNA Haplogroup TreetreeOpen link
  • YFull experimental tree (compare SNP labels)treeOpen link
  • Allen Ancient DNA Resource (AADR) — Harvard Reich labdatabaseOpen link
  • Norman Atlas synthesis notesynthesisAtlas editorial synthesis — verify claims against current phylogenetic trees and open ancient-DNA compendia.