Princess María de los Dolores of Bourbon-Two Sicilies
Princess Dolores of Bourbon- Two Sicilies( 15 November 1909, in Madrid, Spain – 11 May 1996, in Madrid, Spain) was a daughter of Prince Carlos of Bourbon- Two Sicilies and his wife Princess Louise of Orléans.
Princess Dolores was born into the House of Bourbon- Two Sicilies and was a member of the Polish noble Czartoryski family through her marriage to Prince Augustyn Józef Czartoryski.
She was also an aunt of Juan Carlos I of Spain, son of her sister Princess María de las Mercedes of Bourbon- Two Sicilies.
Prince Louis, Count of Aquila
Prince "Luigi" Carlo Maria Giuseppe of Bourbon-Two Sicilies, Count of Aquila (19 July 1824 – 5 March 1897) was a member of the House of Bourbon-Two Sicilies.
Prince Alfonso, Count of Caserta
Prince "Alfonso", Count of Caserta (28 March 1841 – 26 May 1934) was the third son of Ferdinand II of the Two Sicilies and Archduchess Maria Theresa of Austria.
He was pretender to the throne of the Two Sicilies in succession of his older half-brother, Francis II of the Two Sicilies.
He was succeeded by his eldest son, Ferdinand Pius.
Princess María de la Esperanza of Bourbon-Two Sicilies
Princess" María de la Esperanza" Amalia Raniera María Rosario Luisa Gonzaga of Bourbon- Two Sicilies( 14 June 1914, Madrid, Spain – 8 August 2005, Villamanrique de la Condesa, Spain) was the youngest daughter of Prince Carlos of Bourbon- Two Sicilies and his wife Princess Louise of Orléans.
Maria Esperanza's husband Prince Pedro Gastão of Orléans- Braganza, was one of two claimants to the Brazilian throne, and head of the Petrópolis branch of the Brazilian Imperial House.
Maria Esperanza was also an aunt of Juan Carlos I of Spain, son of her sister Princess Maria Mercedes of Bourbon- Two Sicilies.
Prince Carlo, Duke of Castro
Prince Carlo of Bourbon- Two Sicilies, Duke of Castro( born 24 February 1963) is a claimant to the headship of the House of Bourbon- Two Sicilies.
Prince Philip of Bourbon-Two Sicilies
Prince Philip of Bourbon- Two Sicilies( Filippo Maria Alfonso Antonio Ferdinando Francesco di Paola Lodovico Enrico Alberto Taddeo Francesco Saverio Uberto; 10 December 1885 – 9 March 1949) was a member of the House of Bourbon- Two Sicilies and a Prince of Bourbon- Two Sicilies.
Leopold, Prince of Salerno
Leopoldo Giovanni Giuseppe Michele of Bourbon- Two Sicilies, Prince of Salerno( 2 July 1790, Naples, Kingdom of Naples – 10 March 1851, Naples, Kingdom of the Two Sicilies) was a member of the House of Bourbon- Two Sicilies and a Prince of Bourbon- Two Sicilies.
Duchess Elisabeth of Württemberg (b. 1933)
Duchess Elisabeth of Württemberg( born 2 February 1933) is a member of the House of Württemberg and a Duchess of Württemberg by birth and through her marriage to Prince Antoine of Bourbon- Two Sicilies, a member of the House of Bourbon- Two Sicilies and a Princess of Bourbon- Two Sicilies.
Prince Carlos of Bourbon-Two Sicilies
Don Carlos, Prince of Bourbon-Two Sicilies, Infante of Spain
(Full Italian name: "Carlo Maria Francesco d'Assisi Pasquale Ferdinando Antonio di Padova Francesco de Paola Alfonso Andrea Avelino Tancredi, Principe di Borbone delle
Due Sicilie, Infante di Spagna";
10 November 1870, , Bolzano, Austria-Hungary – 11 November 1949, Seville, Spain) was the son of Prince Alfonso of the Two Sicilies, Count of Caserta and his wife Princess Maria Antonietta of Bourbon-Two Sicilies, and nephew of the last King of the Two Sicilies, Francis II.
Princess Urraca of Bourbon-Two Sicilies
Princess Urraca of Bourbon- Two Sicilies( July 14, 1913, Nymphenburg Palace, Munich, Kingdom of Bavaria – May 3, 1999, Sigmaringen, Baden- Württemberg, Germany) was a member of the House of Bourbon- Two Sicilies and a Princess of Bourbon- Two Sicilies.

Question: Who is Prince Carlos Of Bourbon-Two Sicilies's paternal grandfather?
Answer: Ferdinand II of the Two Sicilies