Rana Bahadur Shah
Rana Bahadur Shah, King of Nepal  (1775–1806) was the King of Nepal from 1777 to 1806.
In 1777, he succeeded to the throne after the death of his father, King Pratap Singh Shah.
He ruled under the regencies of his mother, Queen Rajendra Rajya Lakshmi Devi (died on 13 July 1785 from tuberculosis), and then of his uncle, Bahadur Shah.
During this time, the kingdom expanded by conquest to include the Garhwal and Kumaon regions, now part of India.
He sent his uncle Bahadur Shah to jail, who later died in jail.
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.
Subarna Prabha Devi
Subarna Prabha Devi (1779–?)  was the Queen Regent of Girvan Yuddha Bikram Shah and second wife of King Rana Bahadur Shah of Nepal.
She was the mother of eldest Prince Ranodyat Bikram Shah, Prince Samarsher Shah and a princess.
She was daughter of Subudhi Khadka Basnyat.
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.
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.
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.
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.
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.
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.

Question: Who is Subarna Prabha Devi's mother-in-law?
Answer: Rajendra Rajya Lakshmi Devi