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.
Maria Theresa of Austria-Este (1849–1919)
Maria Theresa of Austria-Este (Maria Theresa Henriette Dorothee; 2 July 1849 – 3 February 1919) was the last Queen of Bavaria.
She was the daughter and only child of Archduke Ferdinand of Austria-Este and his wife, Archduchess Elisabeth of Austria.
Archduke Karl Ludwig of Austria
Archduke Karl Ludwig Joseph Maria of Austria( 30 July
1833 – 19 May 1896) was the younger brother of Franz Joseph I of Austria( 1830 – 1916), the father of Archduke Franz Ferdinand of Austria( 1863 – 1914), whose assassination ignited World War I, and grandfather of the last emperor, Charles I.
Karl Lütgendorf
Karl Ferdinand Lütgendorf, born Karl Ferdinand Freiherr von Lütgendorf( 15 October
1914- 9 October 1981) was an Austrian soldier and politician who served as the Defense Minister of Austria from 1971 to 1977.
He died in 1981, in an apparent suicide, after the discovery of his part in the" Lucona" affair.
He was a descendant of the air pioneer.
Karl Ferdinand von Hagen
Karl Ferdinand von Hagen, also called Karl Ferdinand von Geist,( born 1711–19 February 1759 in Bautzen) was a Prussian major general and chief of Infantry Regiment No. 8.
He died from injuries received at the Battle of Hochkirch
Archduke Karl Ferdinand of Austria
Archduke Karl Ferdinand of Austria (Vienna, 29 July 1818 – Gross Seelowitz (Židlochovice Castle), 20 November 1874) was the second son of Archduke Charles, Duke of Teschen (1771–1847) and Princess Henrietta of Nassau-Weilburg, and the maternal grandfather of King Alfonso XIII of Spain.
A son of the "hero of Aspern"
he started a military career in Infantry Regiment 57 in Brno.
Later he received command of a brigade in Italy and fought against the insurgents in Prague in 1848.<br>
In 1859 he was a general in Moravia and Silesia and returned to Brno in 1860.
He became a Lieutenant Field Marshal of the Austrian Army.
Archduchess Isabella of Austria
Archduchess "Isabella" Maria Theresia Christine Eugenie of Austria-Teschen (17 November 1888 – 6 December 1973) was a daughter of Archduke Friedrich, Duke of Teschen and his wife, Princess Isabella of Croÿ.
She was a member of the House of Habsburg-Lorraine (her grandfather, Archduke Karl Ferdinand of Austria, was a grandson of Holy Roman Emperor Leopold II).
Isabella was notable for her brief marriage to Prince Georg of Bavaria.
Their separation and subsequent annulment were widely reported in newspapers.
As a result of this and her later actions as a nurse in the Austrian army, Isabella became considered as a romantic figure; one publication called her "the most romantic heroine of the present war in Austria".
Princess Henrietta of Nassau-Weilburg
Henrietta Alexandrine Friederike Wilhelmine of Nassau-Weilburg, then of Nassau
(areas now part of Germany) (30 October 1797 Palace Ermitage, Bayreuth – 29 December 1829, Vienna) was the wife of Archduke Charles, Duke of Teschen.
Her husband was a notable general of the Napoleonic Wars and victor of the Battle of Aspern-Essling against Napoleon I of France.
Archduchess Maria Alice of Austria
Archduchess Maria Alice of Austria- Teschen( 15 January 1893 – 1 July 1962) was the youngest daughter of Archduke Friedrich, Duke of Teschen and his wife, Princess Isabella of Croÿ.
She was a member of the House of Habsburg- Lorraine( her grandfather, Archduke Karl Ferdinand of Austria, was a grandson of Holy Roman Emperor Leopold II).
Archduchess Alice married Baron Friedrich Heinrich Waldbott of Bassenheim.
Maria Anna of Savoy
Maria Anna of Savoy( 19 September 1803 – 4 May 1884) was Empress of Austria and Queen of Hungary( see Grand title of the Empress of Austria) by marriage to Emperor Ferdinand I of Austria.

Question: Which country Archduke Karl Ferdinand Of Austria's mother is from?