Gertrude of Bavaria
Gertrude of Saxony and Bavaria( 1152/55–1197) was Duchess of Swabia as the spouse of Duke Frederick IV, and Queen of Denmark as the spouse of King Canute VI.
Heather D. Gibson
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She is the spouse of Euclid Tsakalotos, former Greek Minister of Finance.
Marie-Louise Coidavid
Marie Louise Coidavid( 1778 – March 11, 1851), was the Queen of the Kingdom of Haiti 1811 – 20 as the spouse of Henri I of Haiti.
Maria Teresa, Grand Duchess of Luxembourg
Maria Teresa, Grand Duchess of Luxembourg( born María Teresa Mestre y Batista; on 22 March 1956), is the spouse of Grand Duke Henri.
Walter Ulfig
Walter Ulfig was a German composer of film scores.
Mehdi Abrishamchi
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He is the former spouse of the group's current leader, Maryam Rajavi, whom he divorced so that she could become the spouse of Massoud Rajavi.
R. D. Burman
Rahul Dev Burman (27 June 1939 – 4 January 1994) was an Indian music director.
From the 1960s to the 1990s, Burman composed musical scores for 331 films.
Burman did major work with Asha Bhosle (his wife) and Kishore Kumar and scored many of the songs that made these singers famous.
He has also scored many songs sung by Lata Mangeshkar.
Nicknamed Pancham, he was the only son of the composer Sachin Dev Burman.
He was mainly active in the Hindi film industry as a composer, and also provided vocals for a few compositions.
He served as an influence to the next generation of Indian music directors, and his songs continue to be popular in India and overseas.
Sophia Magdalena of Denmark
Sophia Magdalena of Denmark (3 July 1746 – 21 August 1813) was Queen of Sweden as the spouse of King Gustav III.
Humshakal (1974 film)
Humshakal  is a 1974 Hindi movie directed by Jambulingam.
The film stars Rajesh Khanna, Tanuja, Moushumi Chatterjee, Asrani and Aruna Irani.
The music was by Rahul Dev Burman and lyrics were by Anand Bakshi.
The film was a remake of the 1970 Kannada film "Baalu Belagithu", which was also remade in Telugu as "Manchivadu" (1973) and in Tamil as "Oorukku Uzhaippavan" (1976).
The songs of the film were extremely popular with the Kishore-Asha duet song "Hum Tum Gum Sum" being on the top of the charts for more than a year.
The tune of the Rafi-Lata duet "Kahe Ko Bulaya" being even adapted as a religious song in subsequent decades.
Kishore Kumar considered the song "Rastaa Dekhe Tera Vyakul Man Mera" – close to his heart.
As per the review by The Hindu newspaper in 2016, the box office collections of the film were average and the film was hit at the box office.
The review quoted: "Apart from the double role act by Khanna and the decorative inclusion of the pretty Moushumi and Tanuja, it is R.D. Burman who stands out with some delightful compositions."
Princess Auguste of Bavaria (1875–1964)
Princess Auguste of Bavaria( 28 April 1877 – 25 June 1964) was a member of the Bavarian Royal House of Wittelsbach and the spouse of Archduke Joseph August of Austria.

Question: Who is the spouse of the composer of film Humshakal (1974 Film)?
Answer: Asha Bhosle