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 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".
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.
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.
Archduke Charles, Duke of Teschen
Archduke Charles Louis John Joseph Laurentius of Austria, Duke of Teschen (5 September 177130 April 1847) was an Austrian field-marshal, the third son of Emperor Leopold II and his wife, Maria Luisa of Spain.
He was also the younger brother of Francis II, Holy Roman Emperor.
Despite being epileptic, Charles achieved respect both as a commander and as a reformer of the Austrian army.
He was considered one of Napoleon's more formidable opponents.
He began his career fighting the revolutionary armies of France.
Early in the wars of the First Coalition, he saw victory at Neerwinden in 1793, before being defeated at Wattignies 1793 and Fleurus 1794.
In 1796, as chief of all Austrian forces on the Rhine, Charles defeated Jean-Baptiste Jourdan at Amberg and Würzburg, and then won a victory at Emmendingen that forced Jean Victor Marie Moreau to withdraw across the Rhine.
He also defeated opponents at Zürich, Ostrach, Stockach, and Messkirch in 1799.
He reformed Austria's armies to adopt the nation-at-arms principle.
In 1809, he entered the War of the Fifth Coalition and inflicted Napoleon's first major setback at Aspern-Essling, before suffering a defeat at the bloody Battle of Wagram.
After Wagram, Charles saw no more significant action in the Napoleonic Wars.
As a military strategist, Charles was able to successfully execute complex and risky maneuvers of troops.
However, his contemporary Carl von Clausewitz criticized his rigidity and adherence to "geographic" strategy.
Austrians nevertheless remember Charles as a hero of the French Revolutionary and Napoleonic wars.
Archduchess Maria Annunciata of Austria
Archduchess Maria Annunciata of Austria (13 July 1876 – 8 April 1961) was a daughter of Archduke Karl Ludwig of Austria and his third wife, Infanta Maria Theresa of Portugal.
She was Princess-Abbess of the Theresian Royal and Imperial Ladies Chapter of the Castle of Prague (1894–1918).
Veljko Čubrilović
Veljko Čubrilović
( Serbian Cyrillic: Вељко Чубриловић; 6 June 1886 – 3 February 1915) was a Bosnian Serb who was involved in the assassination of Archduke Franz Ferdinand of Austria.
Archduchess Elisabeth Amalie of Austria
Archduchess Elisabeth Amalie of Austria (7 July 1878 – 13 March 1960) was a daughter of Archduke Karl Ludwig of Austria and his third wife Infanta Maria Theresa of Portugal.
She was the mother of Franz Joseph II, Prince of Liechtenstein, and the paternal grandmother of Hans-Adam II, Prince of Liechtenstein.
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.

Question: Who is the paternal grandmother of Archduke Karl Ferdinand Of Austria?
Answer: Maria Luisa of Spain