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 Maria Luisa of Bourbon-Two Sicilies
Princess Maria Luisa of Bourbon- Two Sicilies( full Italian name:" Maria Luisa Immacolata di Borbone, Principessa di Borbone delle Due Sicilie")( 21 January 1855, Naples, Two Sicilies – 23 August 1874, Pau, Armagnac, France) was the youngest daughter of King Ferdinand II of the Two Sicilies and his wife Archduchess Maria Theresa of Austria.
She was known for her piety and for her charity to the poor.
Princess Maria Immaculata of Bourbon-Two Sicilies (1844–1899)
Princess Maria Immaculata of Bourbon- Two Sicilies( Full Italian name:" Maria Immacolata Clementina, Principessa di Borbone delle Due Sicilie")( 14 April 1844, Naples, Kingdom of the Two Sicilies – 18 February 1899, Vienna, Austria) was fifth child and second- eldest daughter of Ferdinand II of the Two Sicilies and his wife Maria Theresa of Austria.
Through her marriage to Archduke Karl Salvator of Austria, Maria Immaculata became an Austrian Archduchess.
Ferdinand II of the Two Sicilies
Ferdinand II( 12 January 1810 – 22 May 1859) was King of the Two Sicilies from 1830 until his early death in 1859.
Prince Antonio, Count of Lecce
Prince Antonio of the Two Sicilies( 23 September 1816 – 12 January 1843) was a son of Francis I of the Two Sicilies and a brother of Ferdinand II King of the Two Sicilies.
Known by his title of Count of Lecce, he was killed at age 26.
Francis I of the Two Sicilies
Francis I of the Two Sicilies( 19 August 1777 – 8 November 1830) was King of the Two Sicilies from 1825 to 1830 and a member of the Spanish royal family.
Gaetano Genovese
Gaetano Genovese( 1795, Eboli- 1875, Naples) was an Italian architect and designer.
He is most notable as the chief royal architect for almost all of the reign of Ferdinand II of the Two Sicilies.
Princess Maria Pia of Bourbon-Two Sicilies (1849–1882)
Maria Pia of the Two Sicilies (2 August 1849 – 29 September 1882) was a Princess of the Two Sicilies and titular Duchess consort of Parma as the wife of Robert I, Duke of Parma.
Maria Pia was the daughter of King Ferdinand II of the Two Sicilies and his wife, Maria Theresa of Austria.
Maria Pia was forced into exile along with the rest of her family after the unification of Italy in 1861.
Cousin Joe
Pleasant Joseph known as Cousin Joe( December 20, 1907 — October 2, 1989) was an American blues and jazz singer, later famous for his 1940s recordings with clarinetist Sidney Bechet and saxophonist Mezz Mezzrow.
Prince Gaetan, Count of Girgenti
Prince Gaetan of the Two Sicilies, Count of Girgenti( 12 January 1846, Naples, Two Sicilies – 26 November 1871, Lucerne, Switzerland) was the seventh child of Ferdinand II of the Two Sicilies and his wife Maria Theresa of Austria.
Gaetan was a member of the House of Bourbon- Two Sicilies and consort to Isabella, Princess of Asturias, twice the recognized heir presumptive to the throne of Spain.
Through this union, Gaetan was created an Infante of Spain.

Question: Who is younger, Cousin Joe or Ferdinand Ii Of The Two Sicilies?
Answer: Cousin Joe