They besieged the city for two years before being bought off with a large cash payment and permission to loot part of western France unimpeded.

In 911 the French king made the Viking chief of Normandy a duke in return for converting to Christianity and ceasing to raid. From the Duchy of Normandy came a remarkable series of warriors, including William I, who conquered England in 1066, Robert Guiscard and his family, who took Sicily from the Arabs between 1060 and 1091, and Baldwin I, king of the crusader kingdom of Jerusalem.

Viking raids stopped at the end of the tenth century. Denmark, Sweden, and Norway had become kingdoms, and much of their king's energy was devoted to running their lands. The spread of Christianity weakened the old pagan warrior values, which died out. The Norse were also absorbed by the cultures into which they had intruded. The occupiers and conquerors of England became English, the Normans became French, and the Rus became Russians.