Question: Who is María De Las Mercedes, Princess Of Asturias's mother-in-law?

Knowledge 1: María de las Mercedes, Princess of Asturias
María de las Mercedes, Princess of Asturias (María de las Mercedes de Borbón y Habsburgo-Lorena) (11 September 1880 – 17 October 1904), was the eldest child of King Alfonso XII of Spain and his second wife, Maria Christina of Austria.She was Princess of Asturias, the heir presumptive to the Crown of Spain, for all 24 years of her life.Had her younger sibling, unborn at the death of Alfonso XII, been a daughter, Mercedes would have been Queen of Spain.The sibling proved to be a boy, Alfonso XIII, and on his birth in 1886, Mercedes turned out not to be queen.She resumed the position of heir presumptive, which she held until her own death, and was succeeded in it by her own infant son Alfonso, Alfonso XIII having not yet married and fathered a legitimate child.Mercedes married in Madrid on 14 February 1901, her second cousin, Prince Carlos of Bourbon-Two Sicilies, a nephew of the King of the then-defunct Kingdom of the Two Sicilies, who was elevated to the rank of Infante of Spain.The marriage was highly controversial due to her father-in-law's ties with the Carlists.She died three years later from complication while giving birth to her third child. [SEP] Knowledge 2: Prince Carlos of Bourbon-Two Sicilies
Don Carlos, Prince of Bourbon-Two Sicilies, Infante of Spain(Full Italian name: "Carlo Maria Francesco d'Assisi Pasquale Ferdinando Antonio di Padova Francesco de Paola Alfonso Andrea Avelino Tancredi, Principe di Borbone delleDue Sicilie, Infante di Spagna";10 November 1870, , Bolzano, Austria-Hungary – 11 November 1949, Seville, Spain) was the son of Prince Alfonso of the Two Sicilies, Count of Caserta and his wife Princess Maria Antonietta of Bourbon-Two Sicilies, and nephew of the last King of the Two Sicilies, Francis II.
Knowledge 1: María de las Mercedes, Princess of Asturias
María de las Mercedes, Princess of Asturias (María de las Mercedes de Borbón y Habsburgo-Lorena) (11 September 1880 – 17 October 1904), was the eldest child of King Alfonso XII of Spain and his second wife, Maria Christina of Austria.She was Princess of Asturias, the heir presumptive to the Crown of Spain, for all 24 years of her life.Had her younger sibling, unborn at the death of Alfonso XII, been a daughter, Mercedes would have been Queen of Spain.The sibling proved to be a boy, Alfonso XIII, and on his birth in 1886, Mercedes turned out not to be queen.She resumed the position of heir presumptive, which she held until her own death, and was succeeded in it by her own infant son Alfonso, Alfonso XIII having not yet married and fathered a legitimate child.Mercedes married in Madrid on 14 February 1901, her second cousin, Prince Carlos of Bourbon-Two Sicilies, a nephew of the King of the then-defunct Kingdom of the Two Sicilies, who was elevated to the rank of Infante of Spain.The marriage was highly controversial due to her father-in-law's ties with the Carlists.She died three years later from complication while giving birth to her third child. [SEP] Knowledge 2: Maria Teresa Felicitas d'Este
Maria Teresa Felicitas d'Este (October 6, 1726 – April 30, 1754) was born a princess of Modena and was by marriage the Duchess of Penthièvre.She was the mother-in-law of Philippe Égalité and thus grandmother to the future Louis-Philippe of France.
Knowledge 1: María de las Mercedes, Princess of Asturias
María de las Mercedes, Princess of Asturias (María de las Mercedes de Borbón y Habsburgo-Lorena) (11 September 1880 – 17 October 1904), was the eldest child of King Alfonso XII of Spain and his second wife, Maria Christina of Austria.She was Princess of Asturias, the heir presumptive to the Crown of Spain, for all 24 years of her life.Had her younger sibling, unborn at the death of Alfonso XII, been a daughter, Mercedes would have been Queen of Spain.The sibling proved to be a boy, Alfonso XIII, and on his birth in 1886, Mercedes turned out not to be queen.She resumed the position of heir presumptive, which she held until her own death, and was succeeded in it by her own infant son Alfonso, Alfonso XIII having not yet married and fathered a legitimate child.Mercedes married in Madrid on 14 February 1901, her second cousin, Prince Carlos of Bourbon-Two Sicilies, a nephew of the King of the then-defunct Kingdom of the Two Sicilies, who was elevated to the rank of Infante of Spain.The marriage was highly controversial due to her father-in-law's ties with the Carlists.She died three years later from complication while giving birth to her third child. [SEP] Knowledge 2: Vera Miletić
Vera Miletić (Serbian Cyrillic: Вера Милетић; 8 March 1920 – 7 September 1944) was a Serbian student and soldier.She was notable for being the mother of Mira Marković, posthumously making her the mother-in-law of Serbian president Slobodan Milošević.

Answer: Princess Maria Antonietta of Bourbon-Two Sicilies