Charles Ferdinand, Duke of Berry
Charles Ferdinand d'Artois, Duke of Berry (24 January 1778 – 14 February 1820) was the third child and younger son of the future King of France, Charles X, and his wife, Maria Theresa of Savoy.
He was assassinated at the Paris Opera in 1820 by Louis Pierre Louvel, an anti-royal Bonapartist.
In June 1832, two years after the overthrow of his father, Charles X, his widow, Marie-Caroline de Bourbon-Sicile, led a royalist insurrection in the Vendée in a failed attempt to restore their son, the Comte de Chambord, to the French throne.
Amy Brown (royal mistress)
Amy Brown( 8 April 1783 – 7 May 1876) was the English mistress of Charles Ferdinand, Duke of Berry, younger son of King Charles X of France and Marie Thérèse of Savoy.
Some authors have stated that they married in a secret ceremony which was conducted in England by her father, a Protestant pastor, but there is no evidence of it.
Together they had two daughters; however, when he returned to France, he was constrained to put an end to his relationship for reasons of state.
Bonne of Berry
Bonne of Berry( 1362/1365 – 30 December 1435) was the daughter of John, Duke of Berry, and Joanna of Armagnac.
Through her father, she was a granddaughter of John II of France.
Prince Henry, Count of Bardi
Prince Henry of Bourbon- Parma, Count of Bardi( 12 February 1851 in Parma, Duchy of Parma – 14 April 1905 in Menton, France) was the youngest son and child of Charles III, Duke of Parma and his wife Princess Louise Marie Thérèse of France, the eldest daughter of Charles Ferdinand, Duke of Berry and Princess Caroline Ferdinande Louise of the Two Sicilies.
Henry was thus a great- grandson of Charles X of France.
Henry was a nephew of Henri, comte de Chambord, disputedly King of France and Navarre from 2 to 9 August 1830 and afterwards the Legitimist Pretender to the throne of France from 1844 to 1883.
Princess Margherita of Bourbon-Parma
Princess Margherita of Bourbon-Parma (1 January 1847 – 29 January 1893) was the eldest child and daughter of Charles III, Duke of Parma and Princess Louise Marie Thérèse of France, the eldest daughter of Charles Ferdinand, Duke of Berry and Princess Caroline Ferdinande Louise of the Two Sicilies.
Margherita was thus a great-granddaughter of Charles X of France.
She was born in Lucca, Duchy of Parma.
She was a niece of Henri, comte de Chambord, disputedly King of France and Navarre from 2 to 9 August 1830 and afterwards the Legitimist Pretender to the throne of France from 1844 to 1883.
Through her marriage to Carlos, Duke of Madrid, Carlist claimant to the Spanish throne, Margherita was titular Queen consort of Spain, France, and Navarre.
John of Valois, Count of Montpensier
John of Berry( 1375/1376–1397), count of Montpensier( 1386 – 1401), was a French nobleman.
He was the son of John, Duke of Berry, and of Joanna of Armagnac.
He had no children and predeceased his father.
He married twice:
Louise Marie Thérèse of Artois
Louise Marie Thérèse d'Artois (Louise Marie Thérèse; 21 September 1819 – 1 February 1864) was a duchess and later a regent of Parma.
She was the eldest daughter of Charles Ferdinand, Duke of Berry, younger son of King Charles X of France and Princess Caroline of Naples and Sicily.
She served as regent of Parma during the minority of her son from 1854 until 1859.
Paul John Kvale
Paul John Kvale (March 27, 1896 – June 14, 1960) was a U.S. Representative from Minnesota.
Princess Alice of Parma (1849–1935)
Princess Alice of Bourbon- Parma( 27 December 1849 in Parma, Duchy of Parma – 16 January 1935 in Schwertberg, Austria) was the youngest daughter of Charles III, Duke of Parma and Princess Louise Marie Thérèse of France, the eldest daughter of Charles Ferdinand, Duke of Berry and Princess Caroline Ferdinande Louise of the Two Sicilies.
Frederick Charles Ferdinand, Duke of Brunswick-Lüneburg
Frederick Charles Ferdinand, Duke of Brunswick- Lüneburg( 5 April 1729 in Brunswick – 27 April 1809 in Glücksburg), was a member of the House of Guelph.
he was a Danish field marshal and also the last Duke of Brunswick- Bevern.

Question: Are Charles Ferdinand, Duke Of Berry and Paul John Kvale of the same nationality?
Answer: no