Archduke Franz Josef of Austria, Prince of Tuscany

Archduke Franz Josef of Austria–Tuscany (German: Franz Josef Karl Leopold Blanka Adelgunde Ignatius Raphael Michael von Habsburg-Lothringen, Erzherzog von Österreich, Prinz von Toskana; 4 February 1905 – 9 May 1975) was the fourth son of Archduke Leopold Salvator of Austria, Prince of Tuscany and Infanta Blanca of Spain. At the fall of Habsburg monarchy he moved to Barcelona, where he became a naturalized Spanish citizen. He married morganatically twice and had a daughter from his second marriage. During World War II he lived in the United States, working in the forestry industry. In 1955 he returned to Austria. He inherited the Carlist pretensions to the Spanish throne of his brother Archduke Karl Pius and called himself Duke of Madrid. He died in 1975.