Question: Who is the maternal grandfather of Archduke Karl Pius Of Austria, Prince Of Tuscany?
Sentence (from "Archduke Karl Pius of Austria, Prince of Tuscany"): Archduke Karl Pius of Austria, Prince Royal of Hungary and Bohemia, Prince of Tuscany (4 December 1909 – 24 December 1953), called "Carlos Pío de Habsburgo-Lorena y de Borbón" in Spain, 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".
Relevant evidence: No