Anne Denman
Anne Denman( 1587–1661) was born in Olde Hall, Retford, Nottinghamshire.
Through a fortunate second marriage with Thomas Aylesbury, she became the grandmother of Lady Anne Hyde, Duchess of York and great- grandmother of Queen Mary II and Queen Anne.
Gülbahar Hatun (wife of Mehmed II)
Gülbahar Hatun( 1432 – 1492) was the consort of Sultan Mehmed II, and mother of Sultan Bayezid II of the Ottoman Empire and the grandmother of Selim I.
Mia Farrow
María de Lourdes Villiers "Mia" Farrow (born February 9, 1945) is an American actress, activist, and former fashion model.
Farrow has appeared in more than 50 films and won numerous awards, including a Golden Globe Award and three BAFTA Award nominations.
Farrow is also known for her extensive work as a UNICEF Goodwill Ambassador, which includes humanitarian activities in Darfur, Chad, and the Central African Republic.
In 2008, "Time" magazine named her one of the most influential people in the world.
The eldest daughter of Australian director John Farrow and Irish actress Maureen O'Sullivan, Farrow had a strict Catholic upbringing in Beverly Hills, California.
After working as a fashion model during her teenage years, she first gained notice for her role as Allison MacKenzie in the television soap opera "Peyton Place" (1964–1966).
Her credited feature film debut in "Guns at Batasi" (1964) earned her a Golden Globe Award for New Star of the Year, and she gained further recognition for her subsequent two-year marriage to Frank Sinatra, whom she married at age 21.
Farrow's portrayal of Rosemary Woodhouse in the horror film "Rosemary's Baby" (1968) saw her nominated for a BAFTA Award and a Golden Globe Award for Best Actress.
She earned a third Golden Globe nomination for her role in "John and Mary" (1969).
In 1971, Farrow became the first American actress in history to join the Royal Shakespeare Company, appearing as Joan of Arc in a production of "Jeanne d'Arc au bûcher".
This was followed by stage productions of "Mary Rose" (1972), "Three Sisters" (1973), and "Ivanov" (1976).
Farrow also starred in several films throughout the 1970s, notably as Daisy Buchanan in the 1974 film adaptation of "The Great Gatsby", and Robert Altman's comedy "A Wedding" (1978).
Farrow began a relationship with filmmaker Woody Allen in 1979, and over a decade-long period starred in 13 of his films, beginning with "A Midsummer Night's Sex Comedy" (1982).
She received numerous critical accolades for her performances in several of Allen's films, including Golden Globe Award nominations for "Broadway Danny Rose" (1984), "The Purple Rose of Cairo" (1985), and "Alice" (1990), as well as a BAFTA nomination for "Hannah and Her Sisters" (1986).
After separating from Allen in 1992, Farrow made public allegations that he sexually assaulted their seven-year-old adopted daughter, Dylan, which he has repeatedly denied.
Despite inconclusive evidence, Farrow retained custody of Dylan.
These claims received significant renewed public attention after Dylan recounted the alleged assault in a 2013 interview.
Since the 2000s, Farrow has made occasional appearances on television, such as a recurring role on "Third Watch" (2001–2003), and had supporting parts in such films as "The Omen" (2006), "Be Kind Rewind" (2008), and "Dark Horse" (2011).
She has also dedicated significant periods to raising her multiple adopted and biological children, as well participating in humanitarian efforts abroad, specifically regarding human rights in African countries.
Hüma Hatun
Hüma Hatun (1410 ‒ September 1449) was the fourth wife of Ottoman Sultan Murad II and mother of Mehmed II and the grandmother of Bayezid II.
Hubba bint Hulail
Hubba bint Hulail was the grandmother of Hashim ibn' Abd Manaf, thus the great- great- great- grandmother of the Islamic" Nabī"( Prophet) Muhammad ibn Abdullah.
Soon-Yi Previn
Soon-Yi Previn (born 8 October 1970) is the adopted daughter of actress Mia Farrow and musician André Previn, and the wife of filmmaker Woody Allen.
Soon-Yi is notable for her relationship with Allen, who was Mia Farrow's romantic partner before becoming involved with her.
Soon-Yi's relationship with Allen became national news in 1992.
Kaoru Hatoyama
After the elections of 2009, she became more widely known as the grandmother of Prime Minister Yukio Hatoyama and his politician brother Kunio Hatoyama.
Hannah Arnold
Hannah Arnold, also known as Hannah Waterman King, was the grandmother of Benedict Arnolds children.
Mona Hopton Bell
Mona Hopton Bell( 1867- 1940) was a British artist, best known for her portraits of civic figures.
She was the grandmother of the painter Jean H. Bell.
Tjuyu
Tjuyu( sometimes transliterated as Thuya or Thuyu) was an Egyptian noblewoman and the mother of queen Tiye, and the wife of Yuya.
She is the grandmother of Akhenaten, and great grandmother of Tutankhamun.

Question: Who is the maternal grandmother of Soon-Yi Previn?
Answer: Maureen O'Sullivan