Ferdinand IV, Grand Duke of Tuscany (; 10 June 1835 – 17 January 1908) was the last Grand Duke of Tuscany from 1859 to 1860. Biography Born at Florence, he was the son of Leopold II, Grand Duke of Tuscany, and Princess Maria Antonia of the Two Sicilies. His first wife died on February 1859. Sometime later, he and his family were forced to flee Florence on 27 April 1859, with the outbreak of a revolution inspired by the outbreak of a war by France and Sardinia-Piedmont against Austria as part of the unification of Italy. The family took refuge in Austria. After the end of the war, Leopold II abdicated on 21 July and Ferdinand succeeded him as Grand Duke. Ferdinand proved unable to return to Florence to claim his throne, and an elected Tuscan National Assembly formally deposed him only a month later, on 16 August. Ferdinand still hoped to recover his throne, as both France and Austria had promised to recognize his rights to it in the Armistice of Villafranca. However, neither power was willing to take any steps to bring about his restoration; Sardinia would annex Tuscany on 22 March 1860, and with Austria recognizing the new Kingdom of Italy after the Third War of Independence in 1866, Ferdinand's hopes to reclaim the throne were ended. Subsequently Ferdinand and his family returned to the Imperial House of Austria. While Ferdinand was allowed to keep the grand ducal title as a courtesy and retain his status as grand master of all Tuscan orders of chivalry for his lifetime, his descendants could only bear the title of "Archduke/Archduchess of Austria"; the right to bear the title "Prince/ss of Tuscany" became restricted solely to family members born before 1866. In 1870 Ferdinand relinquished all dynastic rights to the defunct Grand Duchy for himself and his future heirs in favor of his second cousin, Emperor Franz Joseph I, effectively ending the House of Habsburg-Tuscany's status as a sovereign cadet branch. Ferdinand died in Salzburg in 1908, after spending the rest of his life in exile. Upon his death, his descendants were barred from using their Tuscan titles by Imperial decree. Family and children He married twice and had issue: From his first marriage in Dresden on 24 November 1856 to Princess Anna of Saxony, (Dresden, 4 January 1836 – Naples, 10 February 1859), daughter of King John I of Saxony,