472 after being besieged in Rome by his own generals, Western Roman Emperor Anthemius was captured in the Old St. Peter's Basilica and put to death.
Baptism of Rollo
911 The Treaty of Saint-Clair-sur-Epte between Charles the Simple of France and Rollo leader of the Vikings was signed. The treaty protected Charles kingdom from further invasion and created the duchy of Normandy; the Vikings became known as Normans. Also Rollo agreed to be baptized and to marry the illegitimate daughter of Charles, thus becoming the king's vassal.
1346 Charles IV of Luxembourg was elected Holy Roman Emperor in Germany.
1533 Pope Clement VII excommunicated England's King Henry VIII.