The siege of Genoa of 1331 was one of the episodes of the Aragonese–Genoese War.

The Aragonese conquest of Sardinia by James II of Aragon in 1323 turned the commercial rivalry between the Crown of Aragon and the Republic of Genoa into an open war, and the councilors of Barcelona asked Alfonso IV of Aragon to organize an army against the Genoese.

[1] Guillem de Cervelló i de Banyeres [ca] commanded an armada in 1331, with Galceran Marquet [ca] and Bernat Sespujades [ca] as vice admirals,[2] who attacked Monaco and Mentone, defended by Antonio Grimaldi[3] and besieged Savona.

After Guillem de Cervelló plundered the Italian Riviera, the fleet blocked the port of Genoa and sent a messenger to the senate, asking for redress of grievances or offering battle, which were not accepted, and the fleet plundered the surroundings of the city[4] After Genoa, the fleet retreated to Sardinia,[4] while Antonio Grimaldi assembled a fleet to defend his coasts.

[3] Faced with the escalation of hostilities, John XXII tried without success to achieve peace between the contenders,[5] and in 1332 the admirals of the fleet were the Veguer of Barcelona Pere de Santcliment [ca] in spring, and Francesc de Finestres [ca] and Arnau Oliver in winter.