Archduke_Karl_Pius_of_Austria,_Prince_of_Tuscany--Emperor_of_Austria_Charles_I

Archduke Karl Pius of Austria, Prince Royal of Hungary and Bohemia, Prince of Tuscany (4 December 1909 – 24 December 1953), known as Carlos Pío de Habsburgo-Lorena y de Borbón in Spanish, was a member of the Tuscan branch of the Imperial House of Habsburg and a Carlist claimant to the throne of Spain under the assumed name of "Carlos VIII". He was the tenth and youngest child of Archduke Leopold Salvator of Austria, Prince of Tuscany and Infanta Blanca of Spain.