193 Pertinax became emperor of Rome whose reign lasted three months. He was known as the first emperor of the tumultuous Year of the Five Emperors. He tried to restore discipline in the Praetorian Guards who rebelled and killed him.
866 the Vikings seized control of Eboracum (York), the first major city to fall in their conquest of England.
1512 Michelangelo's paintings on the ceiling of Sistine Chapel was first exhibited.