1375 Truce between the Visconti and their enemies. The papal legate sends Sir John Hawkwood against the Florentines, who vow vengeance on the holy see and the French legates. They unite with Barnabò Visconti against the church and admit Siena, Pisa, and Lucca into the league, and form the “eight of war.” Eighty cities and towns throw off the yoke of the legate.
1377 The papal forces punish Faenza and Cesena severely. The league engages Sir John Hawkwood. It begins to break up. Bologna makes peace with the pope.
1378 Barnabò makes secret negotiations to betray Florence to the pope. Florence makes peace with Rome. The Venetians besiege the Genoese in Cyprus. Defeat of the Genoese fleet off Antium. Revolt in Florence. Sedition of the ciompi. Silvestro de’ Medici chosen gonfalonier. Death of Galeazzo Visconti, succeeded by his son Gian Galeazzo.
1379 The Venetian fleet almost annihilated by the Genoese off Pola. Pietro Doria captures Chioggia and attacks Venice. Siege of Treviso by Francesco da Carrara. The town is relieved by Barnabò Visconti.
1380 The Genoese surrender to the Venetians and make treaty of peace.
1381 Venice cedes Treviso to Duke Leopold of Austria to save it from Francesco da Carrara, who has again laid siege to it. Treaty of Turin. The Albizzi assume the government of Florence.
1384 Leopold of Austria sells Treviso to Francesco da Carrara.
1385 “The Reformers” driven out of Siena. Gian Galeazzo has his uncle Barnabò put to death, and takes possession of his dominions, making many reforms. He thus becomes the most powerful ruler in Italy. The Milan cathedral is started.
1387 Gian Galeazzo, having made an alliance with Francesco da Carrara of Padua whom Antonio della Scala of Verona is attacking on behalf of the Venetians, seizes Verona and Vicenza, the latter of which he refuses to give Carrara as promised. He now offers himself to the Venetians against Padua.
1388 Galeazzo takes Padua, holds it, captures Treviso, and threatens Venice. He makes many unsuccessful attempts on the Tuscan cities. Nice joined to Savoy.