1311 Suppression of the Templars at the Council of Vienne.
1314 The pope makes the king of Naples viceroy of Italy. The Guelf party is now in the ascendant. Death of Clement. The see is vacant for over two years.
1316 Jacques d’Euse, John XXI or XXII, of the French party, elected.
1317 The people of Ferrara restore the city to the Este family.
1322 The Visconti capture Cremona, and the whole family is excommunicated. John offers to recognise Frederick of Austria king of Germany, in return for his help. Frederick sends an army to Italy, but withdraws it.
1323 Excommunication of Ludwig IV of Bavaria. The papal forces take Alessandria and Tortona, and lay siege to Milan. Excommunication of Ludwig IV of Bavaria for helping the Visconti.
1324 The papal and Sicilian forces defeated by Galeazzo Visconti at Vaprio.
1326 John incites the duke of Lithuania to attack the Teutonic knights. The papal forces capture Parma and Reggio.
1328 Ludwig IV, crowned in Rome by Sciarra Colonna, obtains a decree from the Roman people that the pope must reside in Rome. John is declared deposed, and Pietro di Corvara, Nicholas V, made pope.