When did the British people immigrate from Germany?

After the Norman Conquest, King Edward of England died without heirs. William, Duke of Normandy, France, led an invasion in 1066. In October of the same year, he entered London and was crowned King William I of England (reigned 1066-1087). History Known as "William the Conqueror", the Norman Dynasty (1066-1154) was established. The Norman Conquest accelerated the feudalization process that had already begun, and the feudal mode of production was basically established. After William conquered England, he declared himself the supreme owner of the land in the country. He confiscated a large amount of land from Anglo-Saxon nobles and free farmers, taking about 1/6 of the country's arable land and about 1/3 of the mountain forest area as his own. The rest was distributed to his Norman cronies and followers, and he divided the land according to the The number of people is conferred with the title of nobility. The church was also taken over by the Normans. The vassals of William I divided their fiefs into small pieces and gave them to their vassals. By enfeoffing land, a strict feudal hierarchy was established. William required not only his direct vassals to swear allegiance to him, but also his vassals' vassals to swear allegiance to him.