William Rufus was the King of England from 1087 to 1100. He was the third son of William the Conqueror and became king after his father's death. William Rufus was known for his strong and sometimes controversial rule, as well as his conflicts with the church. He also faced challenges from his brothers and nobles during his reign. William Rufus died in a hunting accident, and his death led to a period of instability in England.