Ferdinando IV di Toscana
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English: Ferdinand IV, Grand Duke of Tuscany, (Italian: Ferdinando IV, Granduca di Toscana; 10 June 1835 – 17 January 1908) was the son of Leopold II, Grand Duke of Tuscany. He became Grand Duke of Tuscany in 1859 after his father's abdication, but never reigned and was deposed in 1860 when Tuscany was annexed to Italy. He died in Salzburg.