On This Day: August 13th

Octavian holds the first of three consecutive triumphs in Rome to celebrate the victory over the Dalmatian tribes.

Union of Brittany and France: The Duchy of Brittany is absorbed into the Kingdom of France.

After an extended siege, forces led by Spanish conquistador Hernán Cortés capture Tlatoani Cuauhtémoc and conquer the Aztec capital of Tenochtitlan.

The Treaty of Noyon between France and Spain is signed. Francis I of France recognizes Charles's claim to Naples, and Charles V, Holy Roman Emperor, recognizes Francis's claim to Milan.

Raniero is elected as Pope Paschal II, who would become deeply entangled in the Investiture Controversy.

Count Reginar I of Hainault rises against Zwentibold of Lotharingia and slays him near present-day Susteren.

Emperor Louis II of Italy and Empress Engelberga are captured by Prince Adelchis of Benevento.

Maurice becomes Emperor of the Byzantine Empire.

Emperor Justinian I rewards Liberius for his service in the Pragmatic Sanction, granting him extensive estates in Italy.

John I becomes the new Pope after the death of Pope Hormisdas.