The Vikings who settled in Normandy were primarily under the leadership of Rollo, a Norse chieftain who, in the early 10th century, received land from Charles the Simple, the King of West Francia, in exchange for protection against further Viking raids. This agreement marked the beginning of the Viking settlement in what would become Normandy, a name derived from 'Northmen.' Rollo and his descendants played crucial roles in establishing a significant Norse presence in the region, integrating with the local Frankish culture while retaining elements of their Viking heritage. The settlement of Normandy had lasting effects on European history, influencing the feudal system and the development of the French monarchy. The Vikings' assimilation into the local culture eventually led to the emergence of a distinct Norman identity, which would play a pivotal role in the conquest of England by William the Conqueror in 1066. This blending of Viking and Frankish traditions is a fascinating chapter in the history of medieval Europe.