Which English king was nicknamed 'Rufus'?

William II (c. 1056 – 2 August 1100), the third son of William I of England, was King of England from 1087 until 1100, with powers over Normandy, and influence in Scotland. He was less successful in extending control into Wales. William is commonly known as William Rufus (Rufus being Latin for 'the Red'), perhaps because of his red-faced appearance or, more likely, due to having red hair as a child that grew out in later life.

He was a figure of complex temperament: capable of both bellicosity and flamboyance. He did not marry, nor did he produce any offspring, legitimate or otherwise, which has led to speculations of possible homosexuality by historians. He died after being struck by an arrow while hunting, under circumstances that remain unclear. Circumstantial evidence in the behaviour of those around him raise strong, but unproven, suspicions of murder. His younger brother Henry hurriedly succeeded him as king.