Thirty new genomes from southwestern Britain: Bronze Age newcomers burying their dead in thousand-year-old Neolithic tombs — and why we still can't say whose ancestry the last seven per cent was.
Around 3200 BC four people were buried together at Monkton-up-Wimborne in Dorset. Close family — two first-degree pairs, one mitochondrial lineage between them. Either four siblings, or a woman and three children aged about five, nine and ten. The grave was sealed.
Fifteen hundred years later somebody opened it, laid a man in the middle of the earlier cut and capped him with flint. Not related to them. Not descended from them. From a population that didn't exist in Britain when they were buried.
The same at Sisters Long Barrow, where a young woman was placed in a scoop cut into the top of the mound two millennia after the three men beneath her — and at Sale's Lot, where the secondary burial is also a woman. Two of the three reused monuments in the new paper by Vuković and colleagues received women. The authors are right that three burials prove nothing. It is a well-timed three, six weeks after aDNA showed the Upton Lovell "shaman" — goldworking toolkit, ceremonial cloak, battle axe — was female.
(a) Map of southwestern England showing the location of each of the investigated burial sites. Black square on the inset map indicates the location of the study area. (b) Radiocarbon-dated individuals in the study per site (y-axis). For each individual, the 95.4% calibrated probability interval is shown in grey. Individual labels on the x-axis are coloured blue (male) and red (female). The orange dotted vertical line represents the point estimate for the Amesbury Archer; its 95.4% calibrated probability interval is 2470–2239 BCE. - Fig 1 from Vuković et al.The paper covers thirty individuals from twelve sites in Gloucestershire and Dorset, c. 3800–1400 BC. Everyone before about 3100 BC looks like a European Neolithic farmer; everyone after about 2550 BC looks Bell Beaker. The archaeological reading — monuments keeping their meaning for people with no ancestral claim on them — is careful and, I think, right.
I'm interested in a different part.
The question they tried to answer
British ancestry changed by something like ninety per cent between 2450 and 2000 BC (what that number measures). The interesting remainder is the seven to nine per cent of Neolithic-farmer ancestry in English Chalcolithic and Early Bronze Age people.
Everything turns on where it came from. Descended from Neolithic Britons, and some Neolithic families had descendants. Carried across the Channel by incomers who already had farmer ancestry, and it says nothing about British survival at all. Same number, opposite meanings — at length and formally.
This paper tests it better than anyone has. The usual weak point is the local Neolithic reference, pooled from wherever data happen to exist. Here it is nine individuals from the same regional transect, in some cases the same monuments as the targets.
What came back
The earliest Bronze Age individual — the Sale's Lot woman, c. 2620–2460 BC, buried within a generation or two of the Amesbury Archer — comes back entirely continental. Most of the rest are estimated at zero, or at a positive number whose error bars include zero. Likewise across a further 118 English Bronze Age individuals from the published record.
One exception, which the paper flags as its clearest positive: a woman from Fir Tree Field Ring Ditch, at 45.3 per cent local Neolithic ancestry. The confidence interval runs from 4.2 to 86.3 per cent.
The strongest evidence in the study for Neolithic British ancestry surviving cannot distinguish a trace from most of a genome. It rests on fewer than fifty thousand markers. And she lived around 1400 BC, in the window where farmer ancestry across Bronze Age Britain rises again — a rise generally put down to renewed contact with the continent.
The part that matters
These are whole genomes, shotgun-sequenced and publicly deposited. Every downstream analysis then reduces them to single random base calls at 1.2 million pre-chosen positions — the 1240K panel, the field's common currency for a decade.
Not laziness: it is the only way to talk to the comparative dataset. But the panel discards the rare variation carrying information about specific recent shared ancestors, which is the one thing that could separate a Dorset Neolithic grandmother from a Rhineland one. Sequenced, then thrown away at harmonisation, in a paper published three weeks ago.
The honest qualification is that coverage is thin — median 0.27×, range 0.014–0.78× — so the better analysis probably wouldn't have run anyway. Which makes the constraint structural rather than accidental. (These libraries also mean English Chalcolithic–EBA shotgun data now exist, where when I wrote there weren't any.)
Where it leaves things
The arithmetic is unchanged: seven to nine per cent, well measured, unaddressed. What has changed is that the failure has been reproduced independently, with a better local reference than published data allow, by people with a laboratory.
The man in that Dorset grave wasn't descended from the family whose bones he was laid among. That much is solid, and striking. Whether anyone in Bronze Age Britain descended from Neolithic Britain, we still can't say.
Vuković, N., Bernhardsson, C., Edlund, H. et al. Diachronic reuse of Neolithic burial monuments by Bronze Age newcomers in Southwestern Britain. Sci Rep 16, 26819 (2026). https://doi.org/10.1038/s41598-026-66094-z
No comments:
Post a Comment
Comments welcome on fresh posts - you just need a Google account to do so.