Events in Italy in 1285:

• September 4 - Battle of Les Formiguestook place probably in the early morning of 4 September 1285 near Les Formigues Islands, about 85 km northeast of Barcelona, when a Catalan-Sicilian galley fleet commanded by Roger of Lauria defeated a French and Genoese galley fleet commanded by Guilhem de Lodeva, Henry di Mari, and John de Orrea.
• Rucellai Madonna painted for the Church of Santa Maria Novella in Florence
• Jacopo Savelli becomes Pope Honorius IV upon election, succeeding Pope Martin IV

• Charles I of Naples (1226–1285) - King of Sicily, Albania, and Naples; also known as Charles of Anjou
• Pope Martin IV (Simon de Brion, ?-1285)
• Philip I, Count of Savoy (1207–1285)
• Amadeus V, Count of Savoy (ca. 1250-1285) - Amadeus the Great, successor to his uncle Philip I