Section of a map from 1800 showing the Principality of Piombino and the State of the Presidi, which belonged to the Kingdom of Naples. Control over the mineral-rich island of Elba was divided between Tuscany, Piombino and the State of the Presidi (Porto Longone). Map of the Grand Duchy of Tuscany and the Papal States published by British mapmaker Robert Wilkinson in 1800.