Question: Who is the mother-in-law of Princess Clotilde Of Saxe-Coburg And Gotha?

Knowledge 1: Princess Clotilde of Saxe-Coburg and Gotha
Princess Marie Adelheid Amalie "Clotilde" of Saxe-Coburg and Gotha, full German name: "Marie Adelheid Amalie Clotilde, Prinzessin von Sachsen-Coburg und Gotha, Herzogin zu Sachsen" (8 July 1846, Neuilly-sur-Seine, Île-de-France, Kingdom of the French – 3 June 1927, Alcsút, Hungary) was a Princess of Saxe-Coburg and Gotha by birth and an Archduchess of Austria through her marriage to Archduke Joseph Karl of Austria. [SEP] Knowledge 2: Archduke Joseph Karl of Austria
Archduke Joseph Karl of Austria (2 March 1833 in Pressburg – 13 June 1905 in Fiume) was a member of the Habsburg dynasty.He was the second son of Archduke Joseph, Palatine of Hungary (7th son of Leopold II, Holy Roman Emperor) and Duchess Maria Dorothea of Württemberg.Like many junior members of royal families, Archduke Joseph Karl entered the military.He became a Major General in the Austrian Army in 1860.During the Austro-Prussian War he commanded a Brigade in the North Army and had three horses shot under him at Königgrätz.In 1867, he became Palatine of Hungary after the death of his childless half-brother Stephen, though the post by that time was symbolic only.The archduke had an interest in Romani language and occasionally wrote on this topic to Albert Thomas Sinclair, an American lawyer who shared this interest.A biography of Sinclair notes that the archduke sent a copy of his work, “a large octavo volume handsomely bound It is a most important and valuable philological work comparing the gypsy words with Sanskrit, Hindustani Persian, etc.”
Knowledge 1: Archduke Joseph Karl of Austria
Archduke Joseph Karl of Austria (2 March 1833 in Pressburg – 13 June 1905 in Fiume) was a member of the Habsburg dynasty.He was the second son of Archduke Joseph, Palatine of Hungary (7th son of Leopold II, Holy Roman Emperor) and Duchess Maria Dorothea of Württemberg.Like many junior members of royal families, Archduke Joseph Karl entered the military.He became a Major General in the Austrian Army in 1860.During the Austro-Prussian War he commanded a Brigade in the North Army and had three horses shot under him at Königgrätz.In 1867, he became Palatine of Hungary after the death of his childless half-brother Stephen, though the post by that time was symbolic only.The archduke had an interest in Romani language and occasionally wrote on this topic to Albert Thomas Sinclair, an American lawyer who shared this interest.A biography of Sinclair notes that the archduke sent a copy of his work, “a large octavo volume handsomely bound It is a most important and valuable philological work comparing the gypsy words with Sanskrit, Hindustani Persian, etc.” [SEP] Knowledge 2: Princess Dorothea of Saxe-Coburg and Gotha
Princess Dorothea Maria Henriette Auguste Louise of Saxe-Coburg and Gotha (30 April 1881 – 21 January 1967) was a princess of Saxe-Coburg and Gotha  by birth and the duchess of Schleswig-Holstein  through her marriage to Ernst Gunther, duke of Schleswig-Holstein.Dorothea was born in Vienna, Austria, the second child and only daughter of Prince Philipp of Saxe-Coburg and Gotha and Princess Louise of Belgium.
Knowledge 1: Princess Clotilde of Saxe-Coburg and Gotha
Princess Marie Adelheid Amalie "Clotilde" of Saxe-Coburg and Gotha, full German name: "Marie Adelheid Amalie Clotilde, Prinzessin von Sachsen-Coburg und Gotha, Herzogin zu Sachsen" (8 July 1846, Neuilly-sur-Seine, Île-de-France, Kingdom of the French – 3 June 1927, Alcsút, Hungary) was a Princess of Saxe-Coburg and Gotha by birth and an Archduchess of Austria through her marriage to Archduke Joseph Karl of Austria. [SEP] Knowledge 2: Princess Dorothea of Saxe-Coburg and Gotha
Princess Dorothea Maria Henriette Auguste Louise of Saxe-Coburg and Gotha (30 April 1881 – 21 January 1967) was a princess of Saxe-Coburg and Gotha  by birth and the duchess of Schleswig-Holstein  through her marriage to Ernst Gunther, duke of Schleswig-Holstein.Dorothea was born in Vienna, Austria, the second child and only daughter of Prince Philipp of Saxe-Coburg and Gotha and Princess Louise of Belgium.

Answer: Duchess Maria Dorothea of Württemberg