Vikings were in Iceland too, so this may also be of interest:
From the BBC's Viking Genetics Survey Result page:
"The results were interesting. England (and most of mainland Scotland) were a mixture of Angles, Saxons, Danish Vikings and Ancient Britons. The highest percentage of DNA signatures from the invading groups (Angles, Saxons and Danish Vikings) was found in the North and East of England. Interestingly the place with the highest 'invader input' was York, a well-known Viking settlement site.
There was one result in the North and East of England which did not fit this pattern. In Penrith a significant proportion of the men tested had Norwegian DNA signatures on their Y chromosomes. It seems likely that the Norwegian Vikings who travelled along the sea road from Shetland down to the Isle of Man may well have stopped off in Cumbria. It may also have been a safe haven for Vikings expelled from Dublin at the beginning of the 10th century. This finding fits in remarkably well with archaeological finds of Viking burials, Norse-style place- names and stone sculpture. The input of the Angles and Saxons, who arrived in England in the 5th century AD, were represented by DNA samples from Schleswig-Holstein and Northern Saxony respectively."
From:
http://www.mirabilis.ca/archives/000058.html
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