American Indian Sailed to Europe With Vikings ?

Traci Watson -

Five hundred years before Columbus sailed the ocean blue, a Native American woman may have voyaged to Europe with Vikings, according to a provocative new DNA study.

Analyzing a type of DNA passed only from mother to child, scientists found more than 80 living Icelanders with a genetic variation similar to one found mostly in Native Americans. (Get the basics on genetics.)

This signature probably entered Icelandic bloodlines around A.D. 1000, when the first Viking-American Indian child was born, the study authors theorize. (Related: "Vikings' Barbaric Bad Rap Beginning to Fade.")

Historical accounts and archaeological evidence show that Icelandic Vikings reached Greenland just before 1000 and quickly pushed on to what is now Canada. Icelanders even established a village in Newfoundland, though it lasted only a decade or so (regional map).

The idea that a Native American woman sailed from North America to Iceland during that period of settlement and exploration provides the best explanation for the Icelanders' variant, the research team says.

"We know that Vikings sailed to the Americas," said Agnar Helgason of deCODE Genetics and the University of Iceland, who co-wrote the study with his student Sigrídur Ebenesersdóttir and colleagues. "So all you have to do is assume … that they met some people and ended up taking at least one female back with them.

"Although it's maybe interesting and surprising, it's not all that incredible," Helgason added. "The alternative explanations to me are less likely"—for example the idea that the genetic trait might exist independently, undiscovered, in a few Europeans.

The study authors themselves admit the case is far from closed. But University of Illinois geneticist Ripan Malhi—an expert in ethnic DNA differences who wasn't part of the project—agreed that the report holds "strong genetic evidence for pre-Columbian contact of people in Iceland with Native Americans."

(Related: "Fifty-One Headless Vikings in English Execution Pit Confirmed.")

Dating the DNA Signature

Through genealogical research, the study team concluded that the Icelanders who carry the Native American variation are all from four specific lineages, descended from four women born in the early 1700s.

Those four lineages, in turn, likely descended from a single woman with Native American DNA who must have been born no later than 1700, according to study co-author Ebenesersdóttir.

The genealogical records for the four lineages are incomplete before about 1700, but history and genetics suggest the Native American DNA arrived on the European island centuries before then, study co-author Helgason said.

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