Baroness Gösta von dem Bussche-Haddenhausen
Baroness Gösta von dem Bussche- Haddenhausen( 26 January 1902 – 13 June 1996) was the mother of Prince Claus of the Netherlands, who was the Prince Consort of Queen Beatrix of the Netherlands, thus making her the mother- in- law of the former Dutch Queen.
She is also the paternal grandmother of King Willem- Alexander of the Netherlands, who is the current Dutch King.
Cornelia (mother of the Gracchi)
Cornelia( c. 190s – c. 115 BC) was the second daughter of Publius Cornelius Scipio Africanus, the hero of the Second Punic War, and Aemilia Paulla.
She is remembered as a prototypical example of a virtuous Roman woman.
She was the mother of the Gracchi brothers, and the mother- in- law of Scipio Aemilianus.
Marian Shields Robinson
Marian Lois Robinson( née Shields; born July 29, 1937) is the mother of Michelle Obama, former First Lady of the United States, and Craig Robinson, a basketball executive, and the mother- in- law of former U.S. President Barack Obama.
Priscilla Pointer
Priscilla Marie Pointer( born May 18, 1924) is an American stage, film and television character actress.
She began her career in the theater, including productions on Broadway.
Later, Pointer moved to Hollywood to act in films and on television.
She is the mother of Amy Irving, therefore making her the former mother- in- law of filmmakers Steven Spielberg and Bruno Barreto and the mother- in- law of documentary filmmaker Kenneth Bowser, Jr.
Ebba Eriksdotter Vasa
Ebba Eriksdotter Vasa (circa 1491 – 21 November 1549) was a Swedish noblewoman.
She was the mother of Queen Margaret Leijonhufvud and the second cousin and mother-in-law of King Gustav Vasa.
Eldon Howard
Eldon Howard was a British screenwriter.
She was the mother- in- law of Edward J. Danziger and wrote a number of the screenplays for films by his company Danziger Productions.
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.
Maria Thins
Maria Thins( c. 1593 – 27 December 1680) was the mother- in- law of Johannes Vermeer and a member of the Gouda Thins family.
Françoise Barbaroux
Françoise Barbaroux (1 January 1761 – 3 November 1822) was mistress of Antoine Philippe, Duke of Montpensier.
She bore him one child,
Jean-Antoine-Philippe Dentend (6 August 1797 – 5 March 1858), who became notary to the house of Orléans and in that role oversaw Louis Philippe's donation of his personal goods in 1830 before his accession.
Françoise was insulting to members of Antoine's family, then living in exile after the political tumult of the French Revolution.
The Revolution's victims included Louis Philippe II, Duke of Orléans, Antoine's father.
Madame Adélaïde of Orléans, Antoine's sister, wrote in several of her diary entries that Françoise was "Ugly".
Her attempt to befriend Adélaïde failed as the princesse left for America.
Antoine never saw his son, and Françoise left France for Belgium after Antoine's death.
She remained there until her death in 1822.
Françoise Barbaroux' father, Francis Barbaroux, was the chamberlain to Louis XVIII of France.
Antoine Philippe, Duke of Montpensier
Louis Antoine Philippe d'Orléans, Duke of Montpensier (3 July 1775, Palais-Royal, Paris - 18 May 1807, Salthill, England) was a son of Louis Philippe, Duke of Orléans ("nom de rėvolutionPhilippe Égalité")
(1747–1793), and his duchess Louise Marie Adélaïde de Bourbon, Duchess of Orléans.
He was the younger brother of Louis Philippe, later King of the French.
Antoine had a deep affection for him, and they were only ever separated during the Reign of Terror and the events that followed between 1793 and 1797.

Question: Who is the mother-in-law of Françoise Barbaroux?
Answer: Louise Marie Adélaïde de Bourbon