This caused a change in the parties of Italy; for the Florentines and King Robert, finding the legate was favorable to the enterprises of the Ghibellines, became foes of all those to whom the legate and the king of Bohemia were friendly.
Without having regard for either faction, whether Guelph or Ghibelline, many princes joined them, of whom, among others, were the Visconti, the Della Scala, Filippo Gonzao of Mantua, the Carrara, and those of Este.
Upon this the pope excommunicated them all.

The king, in fear of the league, went to collect forces in his own country, and having returned with a large army, still found his undertaking a difficult one; so, seeing his error, he withdrew to Bohemia, to the great displeasure of the legate, leaving only Reggio and Modena guarded, and Parma in the care of Marsilio and Piero de' Rossi, who were the most powerful men in the city.

The king of Bohemia being gone, Bologna joined the league; and the leaguers divided among themselves the four cities which remained of the church faction.

They agreed that Parma should pertain to the Della Scalla; Reggio to the Gonzaga; Modena to the family of Este, and Lucca to the Florentines.

But in taking possession of these cities, many disputes arose which were afterward in a great measure settled by the Venetians.