Björn Järnsida (Ironside), was a Viking raiding France in the 9th century. According to the old sagas he was the son of Ragnar Lodbroks and participated in Ragnars siege of Paris. The sagas also say that Björn got the name Ironside because he was never injured in battle. (Picture from the TV show Vikings).
Björn Ironside was the son of the Danish/Scandinavian king Ragnar Lodbrok and he had the brothers Hvitserk, Ivar the Boneless and Sigurd Snake-in-the-Eye, and the half-brothers Eric and Agnar. Björn and his brothers conquered all of Sweden. When Ragnar died Björn Ironside inherited Sweden. He had two sons, Refil and Erik Björnsson, who became the next king of Sweden. Photo from the series "Vikings".