	
Here is the related information-"In 1066, Duke William NAME_1 of NAME_2 conquered England killing King NAME_3 NAME_1 at the Battle of Hastings. The invading Normans and their descendants replaced the Anglo-Saxons as the ruling class of England. The nobility of England were part of a single Normans culture and many had lands on both sides of the channel. Early NAME_4 kings of England, as Dukes of NAME_2, owed homage to the King of France for their land on the continent. They considered England to be their most important holding (it brought with it the title of King—an important status symbol)."
Please answer:"Who was the ruling class ahead of the Normans?