The event that began the transition from Old English to Middle English was the Norman Conquest of 1066, when William the Conqueror (Duke of Normandy and, later, William I of England) invaded the island of Britain from his home base in northern France, and settled in his new acquisition along with his nobles and court. William crushed the opposition with a brutal hand and deprived the Anglo-Saxon earls of their property, distributing it to Normans (and some English) who supported him.