Archduke Ludwig Viktor of Austria
Archduke Ludwig Viktor Joseph Anton of Austria( 15 May 1842 – 18 January 1919) from the House of Habsburg was the youngest son born to Archduke Franz Karl of Austria and Princess Sophie of Bavaria and younger brother of Emperor Franz Joseph I of Austria.
Archduke Franz Karl of Austria
Archduke Franz Karl Joseph of Austria (17 December 1802 – 8 March 1878) was a member of the House of Habsburg-Lorraine.
He was the father of two emperors:
Franz Joseph I of Austria and Maximilian I of Mexico.
Through his third son Karl Ludwig, he was the grandfather of Archduke Franz Ferdinand of Austria – whose assassination sparked the hostilities that led to the outbreak of World War I – and the great-grandfather of the last Habsburg emperor Karl I.
Archduke Charles Joseph of Austria (1745–1761)
Archduke Charles Joseph of Austria (Carl Josef Emanuel Johann Nepomuk Anton Prokop; 1 February 1745 – 18 January 1761) was the second son of the Habsburg ruler Empress Maria Theresa
I and her husband, Francis of Lorraine.
Archduke Otto of Austria (1865–1906)
Archduke Otto Franz Joseph Karl Ludwig Maria of Austria (21 April 1865 – 1 November 1906) was the second son of Archduke Karl Ludwig of Austria (younger brother of Emperor Franz Joseph I of Austria) and his second wife, Princess Maria Annunciata of Bourbon-Two Sicilies.
He was the father of Charles I of Austria, the last Emperor of Austria.
Archduke Maximilian Ernest of Austria
Maximilian Ernest of Austria( 17 November 1583 – 18 February 1616), was a German prince member of the House of Habsburg and by birth Archduke of Austria.
He was the son of Archduke Charles II of Austria, in turn son of Emperor Ferdinand I, and Maria Anna of Bavaria.
His elder brother Archduke Ferdinand, succeeded as Holy Roman Emperor in 1619.
Ferdinand III, Holy Roman Emperor
Ferdinand III (13 July 1608 – 2 April 1657) was Holy Roman Emperor from 15 February 1637 until his death, as well as King of Hungary and Croatia, King of Bohemia and Archduke of Austria.
Archduke Leopold Joseph of Austria (1682–1684)
Archduke Leopold Joseph of Austria( June 2, 1682 – August 3, 1684) was a son of Emperor Leopold I and Archduke of Austria.
He died in infancy.
Archduke Charles Joseph of Austria
Charles Joseph  (7 August 1649 – 27 January 1664) was an Archduke of Austria and Grand Master of the Teutonic Knights (1662–64).
He was also the bishop of Olmütz, and Breslau, Passau.
Charles Joseph was born in Vienna as the son of Ferdinand III, Holy Roman Emperor and his first cousin, Maria Leopoldine of Austria.
His mother died shortly after giving birth to him.
Charles Joseph, himself, died in his early teens in Linz.
Archduchess Agnes Christina of Austria
Archduchess Agnes Christina of Austria( 14 December 1928 – 31 August 2007) was a member of the Tuscan line of the House of Habsburg and an Archduchess of Austria and a Princess of Tuscany by birth.
She was the great- granddaughter of Emperor Franz Joseph of Austria- Hungary.
Archduchess Elisabeth Franziska of Austria (1892–1930)
Archduchess Elisabeth Franziska Marie Karoline Ignatia Salvator (27 January 1892 – 29 January 1930) was the eldest daughter of Archduke Franz Salvator of Austria and Archduchess Marie Valerie of Austria.
Through her mother, she was a granddaughter of Emperor Franz Joseph I of Austria.

Question: What nationality is Archduke Charles Joseph Of Austria's father?