History of Corsica dislodge Paoli were futile, in 1764 by secret treaty Genoa sold Corsica to the Duc de Choiseul, then minister of the French Navy, who bought it on behalf of the crown. On the quiet, French troops gradually replaced Genoese in the citadels. In 1768, after preparations had been made, an open treaty with Genoa ceded Corsica to France in perpetuity with no possibility of retraction and the Duc appointed a Corsican supporter, Buttafuoco, as administrator. The island rose in revolt. Paoli fought a guerrilla war against fresh French troops under their commander, Comte de Marbeuf, but was defeated in the
Medieval Corsica Nonetheless their assaults continued. In 828, the defense of Corsica was entrusted to Boniface II of Tuscany, who conducted a successful expedition against the Muslims and built the fortress that later was to bear his name (Bonifacio) in the south. For the next century, Corsica was a part of the March of Tuscany. Boniface' son Adalbert I continued to push back against the Muslim invaders after 846; but, in spite of all efforts, they seem to have remained in possession of part of the island until about 930. The island was hit by a Fatimid raid in 935. During his