Princess Maria Carolina of Bourbon-Two Sicilies (1820–1861)
Princess "Maria Carolina" Ferdinanda of Bourbon-Two Sicilies (29 November 1820 – 14 January 1861) was a princess of the House of Bourbon-Two Sicilies and an infanta of Spain through her marriage to Infante Carlos, Count of Montemolin, Carlist claimant to the throne of Spain under the name Carlos VI.
Maria Carolina was a daughter of Francis I of the Two Sicilies and his second wife Maria Isabella of Spain.
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.
Maria Carolina Zamoyska
Princess Maria Carolina of Bourbon- Two Sicilies, Duchess of Castro( née Countess Maria Carolina Zamoyska)( 22 September 1896 in Kraków, Austria- Hungary – 9 May 1968 in Marseille, France) was the wife of Prince Ranieri, Duke of Castro, claimant to the headship of the House of Bourbon- Two Sicilies.
Carolina was the sixth child and youngest daughter of Polish nobleman Andrzej Przemysław Zamoyski, Count Zamoyski and his wife Princess Maria Carolina of Bourbon- Two Sicilies.
Carolina's maternal grandparents were Prince Francis of Bourbon- Two Sicilies, Count of Trapani and his wife Archduchess Maria Isabella of Austria, Princess of Tuscany.
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.
María Isabella of Spain
Maria Isabella of Spain (María Isabel de Borbón y Borbón-Parma; 6 July 1789 – 13 September 1848) was an infanta of Spain and Queen consort of the Two Sicilies.
Princess Maria Carolina of Bourbon-Two Sicilies (1822–1869)
Princess Maria Carolina Augusta of Bourbon-Two Sicilies (26 April 1822 – 6 December 1869) was a Princess of Bourbon-Two Sicilies by birth and a princess of the House of Orléans through her marriage to Prince Henry of Orléans, Duke of Aumale.
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.
Princess Maria Carolina of Bourbon-Two Sicilies (1856–1941)
Princess" Maria Carolina" Giuseppina Ferdinanda of Bourbon- Two Sicilies, full Italian name:" Maria Carolina Giuseppina Ferdinanda di Borbone, Principessa delle Due Sicilie"( 21 February 1856, Naples, Kingdom of the Two Sicilies – 7 April 1941, Warsaw, Greater German Reich) was a member of the House of Bourbon- Two Sicilies and a Princess of Bourbon- Two Sicilies by birth and a member of the House of Zamoyski and Countess Zamoyska through her marriage to Polish nobleman Count Andrzej Przemysław Zamoyski.
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.

Question: When is Princess Maria Carolina Of Bourbon-Two Sicilies (1820–1861)'s mother's birthday?
Answer: 6 July 1789