Yes, a maternal DNA lineage belonging to haplogroup C1 – a group found today mainly among Indigenous peoples of the Americas and in East Asia – exists in Iceland. In 2010/2011 researchers from deCODE genetics and the University of Iceland described it as a new branch, C1e, and traced it through four families back to around 1700. Whether it goes back to a woman who came from Vinland to Iceland around the year 1000 is an attractive hypothesis, not a proven fact. Here is what the study actually says, what the alternatives are and what has been learned since.
Early in the eighteenth century, in the south of Iceland, in the shadow of Hekla and the glacial rivers, a handful of women lived on neighbouring farms. They had daughters, who had daughters, who had daughters. Nearly three hundred years later their descendants turned up in a genetics database in Reykjavík – carrying in every cell a scrap of DNA that is practically unknown in Europe. Its closest known relatives live in North and South America.
It sounds like a novel: a woman from the New World, brought back by Leif Erikson's people, quietly married into Iceland's story. That is how much of the press told it in 2010. Let's look closer – including at what the geneticists do not know, which matters just as much.
Almost all of your genome sits in the cell nucleus and gets reshuffled every generation: half from your mother, half from your father. But each cell also holds hundreds of tiny power plants, the mitochondria, and they carry a small genome of their own. This mitochondrial DNA (mtDNA) comes only from your mother. It is not reshuffled; it is handed down almost unchanged – mother, grandmother, great-grandmother, an unbroken chain of women reaching deep into the past.
Every now and then a copying error slips in, a mutation, and it is then passed to all descendants in the female line. From these mutations geneticists build a family tree of every maternal lineage on Earth. The main branches are called haplogroups and labelled with letters and numbers: H, U, K, J and T are common in Europe; A, B, C, D and X among the Indigenous peoples of the Americas, and so on.
Haplogroup C1 is one such branch, and its known twigs are distributed fairly clearly. C1a is known from East Asia; C1b, C1c and C1d from the Americas. In Europe, C1 is exceedingly rare. So when a C1 lineage shows up in a North Atlantic island population, geneticists sit up.
One caveat right away: mtDNA records just one line among thousands of ancestors. An Icelander who carries C1e today does not have "Native American ancestry" in any everyday sense. After some thirty generations, a single foremother's share of the rest of your genome is vanishingly small and often no longer detectable. Think of mtDNA as a label, not a portrait. We cover the limits of single markers in more depth in Am I descended from the Vikings?
The discovery came from a team led by Sigríður Sunna Ebenesersdóttir and Agnar Helgason of deCODE genetics and the University of Iceland, working with colleagues in Barcelona. Their paper carries a deliberately cautious title: "A new subclade of mtDNA haplogroup C1 found in Icelanders: Evidence of pre-Columbian contact?" – question mark included. It appeared online in November 2010 and in print in 2011 in the American Journal of Physical Anthropology (vol. 144, pp. 92–99).
Iceland is an ideal place for this kind of detective work. Few countries have recorded their family history so thoroughly, and deCODE's genealogical database allowed the researchers to reconstruct entire maternal lines rather than just testing scattered individuals.
Two things follow. First, the four foremothers were neighbours in the same district, so they very likely descend from a shared ancestor who lived before them. Second, because the four lines already differ slightly from one another, C1e must have been in Iceland no later than around 1700. That is the hard floor. Parish registers and genealogies for these families simply don't reach further back.
From here on, it is interpretation. The authors reasoned like this: for centuries Iceland was small, remote and received few newcomers. If an outside lineage had arrived in the seventeenth century, it would be a remarkable coincidence to catch it in precisely this district at precisely that time. They thought it more likely that C1e had been around much longer, writing that it was "possible and perhaps even probable" that the lineage entered the Icelandic gene pool before Columbus. Hence their working hypothesis: one or more Indigenous women from the Americas, brought to Iceland in the wake of the Norse voyages around the year 1000.
The paper is just as clear on the other side: an Asian or European origin cannot be ruled out, and there is no direct evidence of the proposed contact.
The difficulty lies in the family tree itself. C1e is related to the American branches, but not closely. It carries a whole set of mutations of its own that none of the known lineages share. In other words, the branch split from the rest of C1 a very long time ago – probably many thousands of years – and then went its own way. Where it spent all that time, the sequence itself does not say.
The researchers searched specifically for a match. A sequence from Québec that initially looked promising turned out not to be C1e. A pre-Columbian Taíno sample from Hispaniola carried none of the tested C1e mutations either. In short, nobody has found C1e's "sister" in the Americas. Then again, nobody has found it anywhere else.
There is a catch, though. The Indigenous peoples of northeastern North America are poorly sampled genetically, and some have vanished entirely. The Beothuk of Newfoundland – probably descendants of the people the Norse could have met there – died out in the early nineteenth century; Shanawdithit, the last known Beothuk, died in 1829. A lineage that existed only in such a population could never turn up in modern samples. So the lack of an American match is not a strong argument against the hypothesis. (That is our own reasoning about the problem, not a finding of the study.)
In 2014 the strongest alternative arrived, from an unexpected direction: the Stone Age of Russia. A team led by Clio Der Sarkissian and Wolfgang Haak studied skeletons from the Mesolithic cemetery of Yuzhnyy Oleni Ostrov ("Southern Reindeer Island") in Lake Onega, Karelia, around 7,500 years old. Three of these people also carried C1 – in a previously unknown branch the authors called C1f.
That dented the neat equation "C1 in Europe = an import from the Americas or Asia". If one C1 lineage lived by Lake Onega 7,500 years ago and then vanished, another might have survived at very low frequency in Scandinavia – and travelled to Iceland with the settlers of the Landnám, the settlement period from around 870. In a small, closed island population a rare lineage can survive by sheer chance while disappearing on the mainland. Geneticists call this genetic drift.
Der Sarkissian and colleagues considered a northern European origin more plausible than an American one and wrote that the C1f find lends support to the idea that C1e reached Iceland with the Vikings. But they themselves acknowledged that the Americas are under-sampled, so an American origin was not disproven. Note also: C1e and C1f are not the same lineage. The Karelian find shows only that C1 existed in Europe at all – not that C1e came from there.
In 2018 the same Icelandic research circle, again with Ebenesersdóttir as first author, published a major study in Science: "Ancient genomes from Iceland reveal the making of a human population". It analysed the genomes of 27 people from early Icelandic graves, most of them from the pagan period before about 1000, a few from later centuries.
The headline result concerns the settlement. Iceland's first settlers were, on average, a little over half Scandinavian and a little over two-fifths Gaelic – that is, British and Irish – in ancestry. Modern Icelanders are more "Norse" than their founders, at around 70 per cent. And the ancient Icelanders resemble their Scandinavian and Irish-Scottish source populations more closely than they resemble today's Icelanders: over a thousand years of isolation and drift turned the islanders into a population of their own. The sagas hint at that mixed founding society too – think of Aud the Deep-Minded, who arrived from the British Isles with her household and her unfree followers.
For our question, the result cuts both ways. None of the 27 ancient individuals carries C1. But with only 27 people, set against a lineage carried by a tiny fraction of modern Icelanders, that is exactly what you would expect. The study does not discuss C1e at all; it simply confirms the mechanism both theories rely on – strong genetic drift on the island.
As far as we can tell, no study has yet (as of 2026) identified C1e in an ancient burial – not in Iceland, not in Scandinavia, not in North America. That would be the key finding: an eleventh-century skeleton in Iceland carrying C1e, or a matching lineage in an ancient grave in Newfoundland or Labrador. Until then, the question stays open.
The Vinland reading sounds plausible at all because of the hard archaeology on the other side of the Atlantic. That the Norse reached North America around the year 1000 is no longer saga material; it is established fact. We tell the whole story in Vinland – America Before Columbus; here are the essentials.
In 1960 the Norwegian explorer Helge Ingstad and archaeologist Anne Stine Ingstad found the remains of turf buildings at the northern tip of Newfoundland: L'Anse aux Meadows. The excavations of the 1960s and later work by Parks Canada under Birgitta Wallace produced unmistakably Norse material: buildings in Icelandic-Greenlandic style, a smithy where bog iron was worked, iron rivets of the kind used in shipbuilding, a bronze ring-headed pin and a soapstone spindle whorl. The spindle whorl is generally read as a sign that women were present too. The site has been a UNESCO World Heritage Site since 1978.
Excavators also found butternuts, a kind of walnut that does not grow on Newfoundland. They came from further south, around the Gulf of St. Lawrence. So the Norse ventured beyond their base – into regions where far more people lived.
For the DNA question, note that 1021 does not mean the Norse were there only in that year – it is one date among what were probably several stays. The archaeology suggests the site was used only briefly, for a few years up to perhaps a few decades. Icelandic annals for 1347 still mention a Greenlandic ship that had come from "Markland". Lasting meeting grounds between Norse and Indigenous peoples, however, are not attested.
Two Icelandic sagas tell of the voyages: the Grœnlendinga saga (Saga of the Greenlanders) and Eiríks saga rauða (Saga of Erik the Red). Both were written down in the thirteenth century, some two hundred years after the events, and they contradict each other on many points. They are family tradition shaped into literature, not logbooks. For more on the genre, see our overview of the Sagas of Icelanders.
The people the Norse meet in Vinland are called Skrælingar in the sagas. The original meaning of the word is disputed; it is usually understood as disparaging. Later Greenlanders also used it for the Inuit. Which people were meant in Vinland cannot be said for certain: candidates include the ancestors of the Beothuk and the Innu, and further south the Mi'kmaq and others; in Labrador, people of the Dorset culture were probably still present at the time.
The sagas swing between trade and violence. In the Grœnlendinga saga, Karlsefni's people trade dairy products for furs until a quarrel escalates. Leif's brother Thorvald dies from an arrow after his men had killed sleeping locals under their boats. In Eiríks saga, Freydís Eiríksdóttir sends attacking Skrælingar running with a sword in her hand. For more on this family, read about Erik the Red and his son Leif Erikson.
For the DNA hypothesis, one passage in Eiríks saga stands out. On the way home, Thorfinn Karlsefni and his crew meet five locals in Markland, the forested land north of Vinland: a bearded man, two women and two children. The adults escape, the two boys are captured. In paraphrase, the saga goes on: the Norse take the boys with them, teach them their language and have them baptised. The boys say their mother is called Vethildi and their father Óvægir, and they speak of kings named Avaldamon and Valdidida.
So here, centuries before genetics, a text says that people from the Americas crossed the sea with the Norse. Two caveats apply. They were boys – and boys do not pass on mtDNA. And the saga does not say they reached Iceland; the voyage home led first to Greenland. The passage shows that abduction happened and was remembered. It does not explain C1e.
The Grœnlendinga saga has another, almost eerie scene. As Karlsefni's wife Guðríðr sits indoors with her newborn son Snorri, a strange woman enters, pale, with large eyes, and asks her name. When Guðríðr answers, the stranger says her name is Guðríðr too – and vanishes. A real encounter or a ghost motif? Scholars read the scene differently.
Guðríðr still matters here. According to the Grœnlendinga saga she later lived in Iceland, at Glaumbær in Skagafjörður, and as a widow went on pilgrimage to Rome. Her family shows that people from the Vinland voyages really did return to Iceland. The route from Vinland to Iceland was lived family history, not a thought experiment. Who else came along, the sagas don't say.
In passing, the sagas reveal that the Vinland voyages carried more than free farmers and traders. Eiríks saga names a Scottish pair, Haki and Hekja, fast runners whom King Olaf Tryggvason had given to Leif and whom Karlsefni used as scouts. Slavery was part of everyday life in the Viking Age, and people were abducted and sold over vast distances – we cover this in Slavery among the Vikings.
Against that background, the idea of a captured or bought Indigenous woman taken to Greenland and on to Iceland is not far-fetched. It is arguably more likely than a romantic, freely chosen marriage across cultures. Neither is attested. It belongs, all the same, in any honest account of women in the Viking Age.
Put together, four scenarios can be distinguished. None is ruled out; none is proven.
In 2011, "Vinland" was the favoured option; in 2014, "old Europe". Both teams left the question mark in place. So do we.
You could shrug: not proven, move on. But the case is a fine example of how history is done today. Archaeology, natural science and textual criticism interlock. The sagas, long dismissed as fairy tales, were confirmed at L'Anse aux Meadows. A cosmic radiation event in 993 supplies the date. And a few mutations in the genomes of Icelandic families raise a question nobody had thought to ask.
The case also shows how the media handle such studies. In 2010 the headlines quickly turned a cautious hypothesis into a certainty, complete with romantic comparisons to Pocahontas. Indigenous scholars criticised at the time how little room the coverage gave to the violence that may have lain behind such a voyage, or to the perspective of Indigenous peoples themselves. That is a fair point. If this woman existed, she was not a footnote to a Viking saga but a person with her own origins, her own language and a family she lost.
And the case reminds us how faint our traces often are. Of the voyages to Vinland, what remains is a turf settlement, a few pieces of wood, two sagas and perhaps a single maternal lineage in the blood of some eighty people. Fakes like the Kensington Runestone are much louder – and worth much less. For the wider picture, read about the Vikings in the North Atlantic and the Greenland Norse, whose settlements formed the bridge between Iceland and Vinland.
Three finds could decide the matter: a C1e skeleton from the eleventh or twelfth century in Iceland, Greenland or Scandinavia (which would dispose of the late-arrival idea); a matching sister lineage in ancient samples from Newfoundland, Labrador or the St. Lawrence region (which would strengthen the American case); or C1e or a close relative turning up in Scandinavian DNA (which would point to Europe).
Until then: the lineage is real, it is old, and in Europe it is unique. Whether it is the last memory of a woman from Vinland, nobody can say today. We think that honest "we don't know" makes the story stronger than any headline.
Do Icelanders have Native American DNA? A few dozen living Icelanders carry the rare maternal lineage C1e, part of haplogroup C1, whose closest known relatives are found in the Americas. Whether C1e really came from the Americas is unresolved – an old European origin is also possible.
What is haplogroup C1e? C1e is a branch of mitochondrial haplogroup C1 described in Iceland by Ebenesersdóttir and colleagues in 2010/2011. So far it is known only from Iceland, where four maternal lines trace it back to around 1700.
Did a Native American woman come to Iceland with Leif Erikson? That is a hypothesis, not a finding. The sagas mention two boys captured in Markland, but no woman brought to Iceland, and no ancient DNA has yet documented such a journey.
When were the Vikings in America? The securely dated year is 1021: wood from L'Anse aux Meadows in Newfoundland was demonstrably cut with metal tools that year. According to the sagas, the voyages began around 1000.
Who were the Skrælingar? It is the name the Icelandic sagas give to the Indigenous people the Norse met in Vinland, Markland and Greenland. Which peoples were meant can only be guessed – possibly ancestors of the Beothuk and Innu, or people of the Dorset culture.
For courage. For remembrance. For legends that live on.
Vinland · Women of the Viking Age · The Warrior Woman of Birka · The Dragon Ships.
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