Historical Events in Church Annals for April 11:
Death of Pope Donus, the 78th successor of Peter and the Pope who brought an end to schism in Ravenna.
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.