Mar 17 Battle of Los Alporchones: forces of Kingdoms of Castile and Murcia defeat Emirate of Granada near Lorca, part of the Spanish Reconquista Mar 19 Frederick III of Hapsburg crowned Holy Roman Emperor by Pope Nicholas V at St. Peter's Basilica in Rome -last Holy Emperor crowned in Rome 1451 Historical Events by Year 1453 Medieval Popes Gregory I Gregory XIII Julius II Julius III Leo X Pius V