Question: What title did the mother of Archduke Charles, Duke of Teschen hold in Tuscany?

full_context: Document 1: Ferdinand, Duke of Breisgau: Archduke Ferdinand Karl of Austria-Este (1 June 1754 – 24 December 1806) was a son of Holy Roman Emperor Franz I and Maria Theresa of Austria. He was the founder of the House of Austria-Este and Governor of the Duchy of Milan between 1765 and 1796. He was also designated as the heir to the Duchy of Modena and Reggio, but he never reigned, owing to the Napoleonic Wars.
Document 2: Joseph II, Holy Roman Emperor: Joseph II (Joseph Benedikt Anton Michael Adam; 13 March 1741 – 20 February 1790) was Holy Roman Emperor from 1765 to 1790 and ruler of the Habsburg lands from 1780 to 1790. He was the eldest son of Empress Maria Theresa and her husband, Emperor Francis I, and was the brother of Marie Antoinette. He was thus the first ruler in the Austrian dominions of the House of Lorraine, styled Habsburg-Lorraine. Joseph was a proponent of enlightened absolutism; however, his commitment to modernizing reforms subsequently engendered significant opposition, which eventually culminated in an ultimate failure to fully implement his programmes. He has been ranked, with Catherine the Great of Russia and Frederick the Great of Prussia, as one of the three great Enlightenment monarchs. His policies are now known as Josephinism. He died with no sons and was succeeded by his younger brother, Leopold II.
Document 3: Archduke Ferdinand Karl Joseph of Austria-Este: Archduke Ferdinand Karl Joseph of Austria-Este (25 April 1781 – 5 November 1850) was the third son of Archduke Ferdinand of Austria-Este and of his wife Princess Maria Beatrice Ricciarda d'Este, last member and heiress of the House of Este. For much of the Napoleonic Wars he was in command of the Austrian army.
Document 4: Archduke Charles of Austria (disambiguation): Archduke Charles of Austria most commonly refers to Archduke Charles, Duke of Teschen (1771–1847).
Document 5: Maria Ludovika of Austria-Este: Maria Ludovika of Austria-Este, also known as Maria Ludovika of Modena, (German: "Maria Ludovika Beatrix von Modena" ; 14 December 1787 – 7 April 1816) was the daughter of Archduke Ferdinand of Austria-Este (1754–1806) and his wife, Maria Beatrice Ricciarda d'Este (1750–1829). She was a member of the House of Austria-Este, a branch of the House of Habsburg-Lorraine.
Document 6: Maria Luisa of Spain: Infanta Maria Luisa of Spain (Spanish: "María Luisa", German: "Maria Ludovika") (24 November 1745 – 15 May 1792) was Holy Roman Empress, German Queen, Queen of Hungary and Bohemia, Grand Duchess of Tuscany as the spouse of Leopold II, Holy Roman Emperor.
Document 7: 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.
Document 8: Princess Maria Anna of Saxony (1799–1832): Marie Anna of Saxony, Grand Duchess of Tuscany (15 November 1799 – 24 March 1832), (full name: Maria Anna Carolina Josepha Vincentia Xaveria Nepomucena Franziska de Paula Franziska de Chantal Johanna Antonia Elisabeth Cunigunde Gertrud Leopoldina), was a princess of Saxony. She became Grand Duchess of Tuscany by her marriage to Leopold II, Grand Duke of Tuscany.
Document 9: Archduke John of Austria: Archduke John of Austria (German: "Erzherzog Johann Baptist Joseph Fabian Sebastian von Österreich" ; 20 January 1782 – 11 May 1859), a member of the House of Habsburg-Lorraine, was an Austrian field marshal and Imperial regent ("Reichsverweser") of the short-lived German Empire during the Revolutions of 1848.
Document 10: Archduchess Maria Carolina of Austria (1740–1741): Archduchess Maria Carolina of Austria (full German name: "Maria Carolina Ernestina Antonia Johanna Josefa"; 12 January 1740 – 25 January 1741), was the third child and daughter of Archduchess Maria Theresa of Austria, later Holy Roman Empress and Duke Francis of Lorraine.
Document 11: Maria Theresa of Austria (1801–1855): Maria Theresa of Austria (21 March 1801 – 12 January 1855) was born an Archduchess of Austria and Princess of Tuscany. She was a daughter of Ferdinand III, Grand Duke of Tuscany, and Luisa of Naples and Sicily. She was named after her double great grandmother Empress Maria Theresa. In 1817, she married Charles Albert of Sardinia and subsequently became the Queen of Sardinia upon her husband's accession to the throne in 1831.
Document 12: Maria Josepha of Bavaria: Maria Josepha of Bavaria (Marie Josephe Antonie Walburga Felicitas Regula, 20 March 173928 May 1767) was Holy Roman Empress, Queen of the Romans, Archduchess of Austria, Grand Duchess of Tuscany, etc. by her marriage to Joseph II, Holy Roman Emperor. By birth, she was a Princess and Duchess of Bavaria as the daughter of Charles VII, Holy Roman Emperor, Elector of Bavaria, and Archduchess Maria Amalia of Austria.
Document 13: Archduke Otto of Austria (1865–1906): Otto Franz Joseph Karl Ludwig Maria, Prince Imperial and Archduke of Austria, Prince Royal of Hungary and Bohemia (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.
Document 14: Archduke Charles, Duke of Teschen: Archduke Charles of Austria, Duke of Teschen (German: Erzherzog Carl Ludwig Johann Joseph Laurentius von Österreich, Herzog von Teschen; 5 September 1771 – 30 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 most formidable opponents.
Document 15: Maria Amalia of Austria: Maria Amalia of Austria (Maria Amalie Josefa Anna; 22 October 1701 – 11 December 1756) was Holy Roman Empress, Queen of the Germans, Queen of Bohemia, Electress and Duchess of Bavaria etc. as the spouse of Charles VII, Holy Roman Emperor. By birth, she was an Archduchess of Austria as the daughter of Joseph I, Holy Roman Emperor and Wilhelmine Amalia of Brunswick-Lüneburg.
ground_truth: Grand Duchess