The Duchy of Normandy grew out of the 911 Treaty of Saint-Clair-sur-Epte between King Charles III of West Francia and the Viking leader Rollo.The duchy was named for its inhabitants, the Normans.. From 1066 until 1204, as a result of the Norman conquest of England, the dukes of Normandy were usually also kings of England, the only exceptions being Dukes Robert …

The Normans (Norman: Normaunds; French: Normands; Latin: Nortmanni/Normanni) were a population arising in the medieval Duchy of Normandy from the intermingling between Norse Viking settlers and indigenous West Franks and Gallo-Romans. The term is also used to denote emigrants from the duchy who conquered other territories such as England and Sicily.The …