https://en.wikipedia.org/wiki/Norman_Conquest
The Norman Conquest (or the Conquest) was the 11th-century invasion and occupation of England by an army made up of thousands of Normans, Bretons, Flemish, and French troops, all led by the Duke of Normandy, later styled William the Conqueror.. William's claim to the English throne derived from his familial relationship with the childless Anglo-Saxon king Edward the …