1341 Mastino attempts to sell Lucca to the Florentines. This alarms the Pisans, who raise an army and seize Lucca.
1342 The Florentines having taken a sudden fancy to Walter de Brienne, duke of Athens, who is in Florence on his way to France, make him their lord for life.
1343 Disgusted with his selfish administration the Florentines expel the duke of Athens and regain their freedom. Werner forms the “Great Company.”
1344 The Genoese expel their doge and elect one from the nobility.
1345 Mediation of Lucchino Visconti in Genoa’s civil troubles.
1346 Revolt of Zara suppressed by the Venetians. Parma and Piacenza submit to Lucchino Visconti.
1347 Rienzi made tribune in Rome.
1348 The great plague in Italy.
1350 War breaks out between Venice and Genoa over the seizure of some Venetian ships by the Genoese. The Pepoli cede Bologna to Giovanni Visconti, brother and successor of Lucchino.
1351 Giovanni Visconti makes an unwarranted attack on the Tuscan cities. The Florentines drive his army back. The Genoese fleet under Paganino Doria wins many victories on the Adriatic and in Negropont.