The Italian wordluogotenente is an etymological parallel to lieutenant, deriving from the Latin locum tenens "holding a place", i.e. someone who fills a position instead of another, as a substitute, deputy, et cetera. It has a few specific historical uses:
Military post
The knightly officer who is in daily command of the Grand Master's own regimental company, to which the famigliari belonged.
Civilian administrator
It was also the governor for the Venetian Republic on the island of Cyprus, which it bought from its last Crusader king from the house of Lusignan, usually for a two-year term, until the Turks captured it in 1570. Besides him the military command was entrusted to a capitano, from 1480 to 1571.
Compound and derived titles
In the Neapolitan Two Sicilies Kingdom there was a Luogotenente generale dei reali domini al di là del Faro meaning Lieutenant-general of the royal domains beyond the Lighthouse, i.e. the Governor appointed by the King for Sicily.
In the Savoy dynasty's Kingdom of Piedmont-Sardinia and later united Kingdom of Italy, when the King was away from his office for some reason he could appoint a Luogotenente Generale del Regno to carry out some of the King's duties as a Viceroy. It happened on 1848, when king Charles Albert reached the battlefield in Lombardia, Eugenio Savoia-Carignano was 'Luogotenente Generale del Regno' and it was up to him to announce the year after that the defeated king abdicated and succession passed to his son Vittorio Emanuele II. Eugenio Savoia-Carignano covered again the same role in 1859 and in 1866 when Victor Emmanuel II was involved in the second and third War of Independence. Finally in 1860/1861 he was appointed Luogotenential duties but limited to Toscana and to southern Italy, when those regions passed under the Kingdom of Sardinia. Again on 25 May 1915 during World War I when King Victor Emmanuel III, leaving Rome in order to reach the war headquarters in North Italy and to assume Supreme War Command, he appointed his uncle, Tomaso di Savoia Duca di Genova, 'Luogotenente Generale del Regno' with delegate powers for ordinary and urgent administration until 1919. Near the end of World War II, the same King appointed his son, Umberto, as 'Luogotenente Generale del Regno' under Allied and Italian pressure. It was believed that Victor Emmanuel was too compromised by his earlier support of the fascist regime to have any further role in state affairs.
