sentences:  Joseph ha-Kohen was highly regarded as a historian and physician.One of his chief concerns was also the release of the many Jewish captives taken by the vessels of the Italian republics and by the Corsairs; as in 1532, when Andrea Doria captured many Jews on taking Coron, Patras, and Zante; in 1535, when the emperor Charles V took Tunis; in 1542, when the galleys of Cegala Visconti had imprisoned a number of Jews.In Hebrew literature Joseph ha-Kohen achieved prominence by two historical works.