DNA shows Celtic hero Somerled's Viking roots IAN JOHNSTON SCIENCE CORRESPONDENT A HISTORIC Celtic hero credited with driving the Vikings out of western Scotland was actually descended from a Norseman, according to research by a leading DNA expert. According to traditional genealogies, Somerled, who is said to have died in 1164 after ousting the Vikings from Argyll, Kintyre and the Western Isles, was descended from an ancient royal line going back to when the Scots were living in Ireland. But Bryan Sykes, an Oxford University professor of human genetics who set up a company called Oxford Ancestors to research people’s...