Medieval Corsica Count of Corsica at Biguglia, even seizing Bastia. Lomellino was unable to make headway against him and, by 1410, all Corsica, with the exception of Bonifacio and Calvi, was lost to Genoa, now once more independent of France. A feud between Vincentello and the Bishop of Mariana, however, led to the loss of his authority in the Terra di Comune and he was compelled to go to Spain in search of assistance. In his absence the Genoese reconquered the island. At this stage, the Western Schism was underway in Roman Catholic Europe. Corsica itself became divided as the suffragan sees
Medieval Corsica of Massa, to put a stop to the turmoil. A Count of Cinarca was reinstated and the war between Malaspina, Cinarca, Pisa, and Genoa dragged on with no side gaining the mastery until 1298, when Pope Boniface VIII formally bestowed the "regnum Corsicae", Kingdom of Corsica, on James II of Aragon along with the "regnum Sardiniae", Kingdom of Sardinia. In 1325, James finally set out to conquer his dual island kingdom. Sardinia was attacked and the Pisans were destroyed. Unable to sustain themselves at sea, their fortunes in Corsica fell off abruptly. No comparable campaign, however, was launched at Corsica