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.
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.
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.
Boson II of Arles
Boson II of Arles( 928 – 965/67) was Count of Avignon from 935 and Count of Arles from 949.
Around 953, Boso II married Constance of Provence, a daughter of the Bivinid Charles Constantine, Count of Vienne, from whom he got two sons: Redwood II( Roubaud), and William I( Guillaume the Liberator)(* c. 952; † 994), Count of Arles and Provence, and then Margrave of Provence.
His origin is controversial, even though his life is relatively well known.
Trophimus of Arles
According to Catholic lore, Saint Trophimus of Arles was the first bishop of Arles, in today's southern France.
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.
Saturninus of Arles
Saturninus of Arles( bishop from 347- 361) was a French Arian bishop of Arles in the early 4th century who under Constantius II was Primate of Gaul.
He is known for his opposition to Saint Hilary of Poitiers, bishop of Poitiers, at the Church Council of Arles of 353.
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.
Constance of Arles
Constance of Arles (c. 986 – 28 July 1032), also known as Constance of Provence, was queen of France as the third spouse of King Robert II of France.
Robert II of France
Robert II (27 March 972 – 20 July 1031), called the Pious  or the Wise , was King of the Franks from 996 to 1031, the second from the House of Capet.
He was born in Orléans to Hugh Capet and Adelaide of Aquitaine.
Robert distinguished himself with an extraordinarily long reign for the time.
His 35-year-long reign was marked by his attempts to expand the royal domain by any means, especially by his long struggle to gain the Duchy of Burgundy.
His policies earned him many enemies, including three of his sons.
He was also known for his difficult marriages: he married three times, annulling two of these and attempting to annul the third, prevented only by the Pope's refusal to accept a third annulment.

Question: Who is the mother-in-law of Constance Of Arles?
Answer: Adelaide of Aquitaine