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.
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.
Liza Minnelli
Liza May Minnelli (born March 12, 1946) is an American actress and singer.
Best known for her Academy Award-winning performance in "Cabaret" (1972), she is famous for her energetic stage presence and her powerful mezzo-soprano singing voice.
She is the daughter of Judy Garland and Vincente Minnelli.
In 1972, she became the only Oscar recipient whose parents also won Oscar awards.
Seeking theatrical work, Minnelli moved to New York City in 1961, where she began her career as a musical theatre actress, nightclub performer and traditional pop music artist.
She made her professional stage debut in the 1963 Off-Broadway revival of "Best Foot Forward" and won a Tony Award for starring in "Flora the Red Menace" in 1965, which marked the start of her lifelong collaboration with John Kander and Fred Ebb.
They wrote, produced or directed many of Minnelli's future stage acts and TV shows and helped create her stage persona of a stylized survivor, including her career-defining performances of anthems of survival ("New York, New YorkCabaret" and "Maybe This Time").
Along with her roles on stage and screen, this persona and her style of performance added to Minnelli's status as an enduring gay icon.
Critically lauded for her early non-musical screen performances—especially "The Sterile Cuckoo" (1969)—Minnelli rose to international stardom, starring in "Cabaret" and the Emmy Award-winning TV special "Liza with a Z" (1972).
Most of her following films—including "Lucky Lady" (1975), "New York, New York" (1977),
"Rent-a-Cop" (1988) and "Stepping Out" (1991)—were panned by the critics and bombed at the box office, and she had no more major movie hits except "Arthur" (1981).
She returned to Broadway on a number of occasions, including "The Act" (1977), "The Rink" (1984) and
"Liza's at The Palace..." (2008), worked on various television formats and has predominantly focused on music hall and nightclub performances since the late 1970s.
Her concert performances at Carnegie Hall in 1979 and 1987, and at Radio City Music Hall in 1991 and 1992 are recognized among her most successful.
From 1988 to 1990, she toured with Frank Sinatra and Sammy Davis Jr. in "Frank, Liza & Sammy:
The Ultimate Event".
Best known for her renditions of pop standards, Minnelli's early 1960s pop singles were produced to attract a young audience, and her albums from 1968 to 1977 contained much of the contemporary singer-songwriter material.
In 1989, she ventured into the contemporary pop scene by collaborating with the Pet Shop Boys on the album "Results".
After a hiatus due to serious health problems, Minnelli returned to the concert stage in 2002 with "Liza's Back" and was an acclaimed guest star in the sitcom "Arrested Development" between 2003 and 2013.
Since the 2010s, she has avoided huge concert tours in favor of small retrospective performances.
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.
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.
David Gest
David Alan Gest (May 11, 1953 – April 12, 2016) was an American producer and television personality.
Gest produced the television special  in 2001, which was the last reunion of Michael Jackson and the Jacksons coming 17 years after their previous reunion.
Gest appeared on the 2006 series of the British reality television show
"I'm a Celebrity...
Get Me Out of Here!"
Gest appeared in "Celebrity Big Brother" in the UK in 2016 but due to illness had to leave after 13 days.
He frequently made tabloid headlines during his marriage with Liza Minnelli.
He is the founder of the American Cinema Awards Foundation in 1983.
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.
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.
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.

Question: Who is the mother-in-law of David Gest?
Answer: Judy Garland