Detail of a map of Italy showing the southern half of Tuscany, the Principality of Piombino, as well as the Tuscan Presidios (or State of the Presidi) centered on Orbetello and which included also Porto Longone on the island of Elba. Cropped from a map of Italy published by Homann Heirs in 1742. In 1735, Piombino ceased to be an imperial fief and the prince became a nominal vassal of the newly-installed Bourbon King of Naples (hence the "Neap.")