 In 1323 it was mentioned as "Orsarina".During the Middle Ages and into the Early Modern Period, it (along with Burbaglio and Muralto) was part of the "Vicinanza" of Consiglio Mezzano, which belonged to the Locarno and Ascona region.The castle SS Abbondio e Biagio was given in the 12th century as a fief by the Bishop of Como to the Muralto family.