Piombino
…built the Channels. The Castle of Piombino remained a Pisan possession until Gerardo Appiani, after ceding Pisa to the Milanese Visconti, carved out an independent lordship centred on Piombino that included the islands of the Tuscan Archipelago: Elba, Pianosa, Montecristo, Capraia, Gorgona, and Giglio, for his family, who…