Length of reign of Norman Monarchs 1066-1216
Anglo-Saxon rule with a new reign of French-English monarchs, and the connection between the two crowns would last for centuries. William I, a descendent of the first Duke of Normandy; Rollo the Viking, spent over twenty years as the King of England, and despite some rebellions and Viking invasions, his military control over Britain allowed him to spend the majority of his reign in mainland Europe. He is credited with commissioning the construction of many castles (including the Tower of London) and for improving the feudal administration and taxation systems of Europe in the middle ages. He also ordered the creation of the Domesday Book, which was a collection of various statistics from all over England in medieval times, and this has given historians a much greater understanding of medieval Britain.
After achieving victory at the Battle of Hastings, William the Conqueror was crowned King of England on Christmas Day, 1066. This replaced the