Iron Agec. 2450–850 BC · Europe, Central Europe, Germany
Ancient DNA of 4,587 people points to central Europe as the cradle of the Celtic languages
A Nature study finds three big population movements in Bronze Age Europe and argues that a westward spread from eastern central Europe best explains Celtic.
In brief 3 key points
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- Genomes of 4,587 ancient Europeans tested against four Celtic origin models
- A Late Bronze Age spread from central Europe fits best
- Genes and language need not move together, the authors warn
Ancient DNA suggests that the Celtic languages spread across Europe with people moving west from eastern central Europe in the Late Bronze Age. A study in Nature analysed genome-wide data from 4,587 ancient individuals, mostly from Bronze and Iron Age Europe. It tested four rival models of where Celtic began.
Celtic languages survive today only on Europe's Atlantic fringe. In the Iron Age they were spoken across much of the continent. Lepontic is recorded in northwestern Italy, Celtiberian in central and northeastern Iberia, and Gaulish from France to the Balkans.
Four models of where Celtic began
All Celtic languages descend from an unrecorded ancestor, Proto-Celtic. Most scholars agree that the Indo-European dialect behind it came from the Pontic steppe after about 3000 BC. Where and when Celtic itself formed and spread is still debated.
The first model ties Celtic to the Bell Beaker culture of the Late Neolithic and Early Bronze Age. A second, Celtic from the West, places it in the Atlantic Bronze Age networks linking Iberia, France, Ireland and Britain. A third puts it in inland France and perhaps northwestern Italy. The fourth and oldest, Celtic from the East, places it in eastern central Europe and links it to the Urnfield, Hallstatt and La Tène cultures.
Three movements in the genes
The team found three main processes that shaped Europe's population and matter for Celtic. First, steppe-related ancestry arrived with Bell Beaker groups after about 2450 BC. That ancestry stayed dominant in the region through to the Iron Age.
Second, people moved from southwestern Europe into Britain during the Bronze Age, between about 1850 and 1250 BC. This fits the idea that Celtic formed along the Atlantic coast.
Third, ancestry linked to Late Bronze Age Knovíz and Urnfield groups of eastern central Europe spread west between about 1250 and 850 BC. It reached France, the British Isles, northeastern Iberia and Italy. It was later found in Iron Age Hallstatt and La Tène contexts.
All three movements match parts of the proposed models. The authors argue that the last one, from eastern central Europe, is the simplest explanation for the spread of Celtic.
They also add a caution. History does not always follow the simplest path, and people can change language without any change in their genes. The results narrow down which scenarios are plausible rather than settling the question.
The study builds on a parallel paper that used the same approach to trace the Germanic languages. The team used several genetic methods, including identity-by-descent mixture modelling, to tell continuity in a population apart from new people arriving.
Sources (1)
Peer-reviewed paper
- Tracing the spread of Celtic languages using ancient genomics (Nature: archaeology)
Paper: Tracing the spread of Celtic languages using ancient genomics. Nature (2026). DOI: 10.1038/s41586-026-11198-9
Edited by Guiseppe Weijermars
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