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
Ancient Corsica a new problem with the Saracens, who ravaged the coasts of the island frequently. The Lombards also returned to the island, to fight against the Saracens. The conflict with the Saracens, which also drew in other significant powers that often laid claim to Corsica or a part thereof, dominated the fortunes of the island for several centuries. This period is almost unrecorded, except in the Chronicles of Giovanni della Grossa (1388-1464), which were written much later and are heavily infused with legends. Source material and research on the island are both sparse and as a result there have been few