Death of Edward IV, King of England. His brother Richard becomes the "Protector" of Edward's son - twelve year-old Edward V.
Maximilian I is crowned King of Germany during the reign of Pope Innocent VIII
England's Richard I leads his army out of Sicily, leaving the area vulnerable to the Hohenstaufen forces and greatly hurting the Papal States power.
Pope Marcellus II is elected the 222nd in the line of Peter, but he does not last a month, dying on May 1, 1555.
The martyrdom of Saint Stanislaus, Bishop of Cracow, who was slain by King Boleslaus II of Poland while Stanislaus was celebrating Holy Mass.
Construction begins on the new Saint Peter's Basilica at the Vatican under the guidance of Pope Julius II who enlisted the talents of Michelangelo and Raphael.
The Papal Troops and the Holy League armies are badly defeated by the French at Ravenna, Italy but the plight of the alliance of the Holy League leads to help from the Swiss troops which results in driving France from Italian soil and creates the evolution of the famous Swiss Guard who guard the Vatican today.