[2] He had been elected several times to the Great Council (1264, 1266–68, 1270, 1275, 1281, 1295), he was also mayor of Poreč and during this mandate, he suffered excommunication by the local bishop Boniface, who had pro- Aquileian tendencies.

Having freed access to the Black Sea, the squadron joined other Venetian boats and attacked the Ligurian colony of Caffa in Crimea, plundering and destroying several enemy ships.

Pope Clement V 's reaction was not long in coming and, after having hurled the interdict and excommunication on Venice on 27 March 1309, he quickly took control of Ferrara.

He sent Francesco Dandolo to Avignon to conduct exhausting negotiations, which led on 26 January 1313 to the lifting of the interdict and excommunication and on 17 February to definitive peace (through the bull Decet sedis ), however unfavorable to Venice.

Among the condemned there was also her daughter Soranza, banished with her husband Nicolò Querini; she later tried to return to the city trusting in the intervention of her father, but she was confined to the monastery of Santa Maria delle Vergini by decision of the newly formed Council of Ten.

While, as regards the Venetian mainland, Venice kept out of the war events involving Cangrande I della Scala, with whom they tried to maintain good relations thanks to a treaty concluded in 1317.

[2] There was also a resumption of trade by sea (although hindered by some acts of piracy by the Turks and Genoese), with the signing of agreements with the empires of Byzantium and Trebizond and the kingdoms of Armenia, Cyprus, Sicily and Tunis; in addition, the route which, through the Strait of Gibraltar, reached Flanders and England was strengthened .

Soranzo was a man of culture and had contacts with some intellectuals, including Tanto, great chancellor and author of poems in Latin, and the pre-humanist Albertino Mussato, with whom he maintained a correspondence concerning the birth of three cubs from a pair of lions that Federico III of Aragon had donated it to the Doge (an event so unusual that it was recorded in the oldest of the Libri pactorum of the Municipality).

He also had the opportunity to meet Dante Alighieri in 1321, when the poet took part in a diplomatic mission on behalf of Guido Novello da Polenta, lord of Ravenna .