1400 Plague in Siena, Lombardy and Masse. Colleoni Bartolomeo is born.
1401 Giovanni I Bentivoglio signore of Bologna. Nicholas of Cusa born. Foscari heads Council of Forty in Venice.
1402 Sep 3: Giangaleazzo Visconti dies of typhoid or malaria. Giovanni Maria takes over. Medici open wool shop in Florence. Plague in Lombardy.
1403 Bentivoglio murdered. Giovanni Rucellai born in Florence.
1404 Pope Boniface IX dies. Innocent VII takes over. Leon Battista Alberti born in Genoa.
1406 Innocent VII dies. Gregory XII becomes pope. Humanist Coluccio Salutati dies at 75.
1407 Gianfrancesco Gonzaga becomes marquis of Mantua. Lorenzo Valla is born in Rome. Oddone Colonna is made Pope Martin V.
1409 Council of Pisa elects third Pope. Florence at war with Pisa.
1411 Sigismund of Bohemia made 'King of the Germans.'
1412 Giovanni Maria Visconti, oldest son of Giangaleazzo, murdered in church S. Gottardo for his cruelty. His brother Filippo Maria Visconti becomes last Visconti duke of Milan. 1414 Council of Constance opens to end Great Schism.
1415 Pope Gregory XII dies. July 6: Jan Hus burned for heresy at Council of Constance. Council deposes Pope Benedict. Anti-pope John resigns. Henry V fights Battle of Agincourt.
1417 Pope Martin V. elected.
1418 Filippo Maria´s wife Beatrice murdered by husband for adultery. Council of Constance closes; Great Schism ends.
1419 'Hussite' War begins.
1420 Leonardo Bruni translates Aristotle´s 'Economics' for Cosimo di Medici.
1421 Plague in Siena. Population 15,000 for next 2 generations.
1422 Venice captures Genoa Charles VI of France dies.
1423 Milan violates agreement on borders with Florence, war breaks out. Doge Tommaso Mocenigo dies. Francesco Foscari leads Venice. Council of Pavia opens.
1424 Anti-pope Benedict XIII, Pedro de Luna, dies in Spain.
1427 Antonio is most popular male name in Tuscany. Population of city of Florence is 40,000. Florentine Catasto. 246,000 people in lands controlled by Florence.
1429 April 29: Joan of Arc frees Orlean from seige.
1431 Pope Martin V. dies. Eugenius IV becomes pope. May 30: Joan of Arc burned in Reims as a witch. Henry VI Lancaster crowned in Paris. Council of Basel opens.
1432 Revolt in Rome. Pope Eugenius flees to Florence. Order restored by warlike Cardinal Giovanni Vitteleschi. Sigismondo Malatesta becomes duke of Rimini.
1433 Gonzagas of Mantua raised to Marquis by emperor. Cosimo di Medici ransomed for 1800 florins. Sigismund crowned Holy Roman Emperor by Eugenius in Rome. Humanist Marsilio Ficino born.
1434 Then Cosimo di Medici controls Florence. In Milan, King Alfonso of Naples is prisoner of Filippo Maria. Was set free without ransom, alliance formed.
