Who was the maternal grandfather of Prince Carl Bernadotte?
Prince Carl Bernadotte Carl Gustaf Oscar Fredrik Christian, Prince Bernadotte (10 January 1911 – 27 June 2003), originally Prince Carl, Duke of Östergötland, was the youngest child and only son of Prince Carl of Sweden and Princess Ingeborg of Denmark and eventually a prince of the Belgian nobility. To distinguish himself from his father, he was widely known as "Carl Junior." He was the brother of Princess Margaretha of Sweden, Queen Astrid of Belgium and Crown Princess Märtha of Norway.
Prince Carlos, Duke of Parma Prince Carlos of Bourbon-Parma, Duke of Parma and Piacenza (born 27 January 1970) is the current head of the House of Bourbon-Parma, as well a member of the Dutch Royal Family. He is the uncontested traditional claimant to the defunct throne of the Duchy of Parma under the name "Carlo V" (English: Charles V), and is a contested pretender to the Carlist claim to the throne of Spain under the name "Carlos Javier II" (English: Charles Xavier II).