Question: What year was S. Aishwarya's grandmother born in?

Context articles: Willa Cather Birthplace
S. Aishwarya
Annett Louisan
Jane McKechnie Walton
Robert Tracy
Radha Viswanathan
Jacqueline Aguilera
Anthony Durand
Zef Kolombi
Helen Tse

The Willa Cather Birthplace, also known as the Rachel E. Boak House, is the site near Gore, Frederick County, Virginia, where the Pulitzer Prize-winning author Willa Cather was born in 1873.
 The log home was built in the early 19th century by her great-grandfather and has been enlarged twice.
 The building was previously the home of Rachel E. Boak, Cather's grandmother.
 Cather and her parents lived in the house only about a year before they moved to another home in Frederick County.
 The farmhouse was listed on the Virginia Landmarks Register (VLR) in 1976 and the National Register of Historic Places (NRHP) in 1978.
S.Aishwarya born on 27 October in Chennai, Tamil Nadu) is an Indian singer of traditional Carnatic music.
 She is the great-granddaughter of M.S. Subbulakshmi.
 and the grand daughter of Radha Viswanathan
Annett Louisan (born Annett Päge on 2 April 1977, in Havelberg, Saxony-Anhalt Germany) is a German singer.
 She lives in Hamburg, Germany.
 Louisan is her stage name, derived from the name of her grandmother, Louise.
 Concerning her birth year, there is conflicting testimony, with the official date being given as 1979.
 Her first album, "Bohème", was listed on German charts for almost a year, with a peak ranking of third place.
 She appeared on the AVO Session program at Basle on 7 November 2006.
Jane McKechnie Walton was born on July 16, 1847 in Edinburgh, Scotland.
 She was the daughter of Jane (Jean Tinto) Bee and John McKechnie.
 Her father was a bell molder by trade and died of typhoid on January 3, 1848 when Jane was just eighteen months old.
 Her grieving mother gave birth to the McKechnie's only son a few months later.
 Within another year, Jane's mother was taught about The Church of Jesus Christ of Latter-day Saints (LDS Church) by two Mormon missionaries.
 She believed their words and was baptized into the LDS Church on February 21, 1850.
 Several months later, Jane's grandmother, uncle and aunt followed her mother, Jean's footsteps and also joined the newfound religion.
 By September 1850, Jane's mother, grandmother, uncle, aunt and her own brother and sister were booked for ocean travel on The North Atlantic ship which was bound for New Orleans in America.
Born at Toddington in Gloucestershire, he was fifth son of Robert Tracy, 2nd Viscount Tracy of Rathcoole, he was the eldest son of his second wife, Dorothy, daughter of Thomas Cocks of Castleditch, Herefordshire.
 Robert's paternal grandmother, Anne, was daughter of Sir Thomas Shirley of Wiston, Sussex.
 He matriculated from Oriel College, Oxford, on 29 October 1672, and entered the Middle Temple the following year.
Radha Viswanathan (born 1934) is an Indian vocalist and former classical dancer.
 She has performed extensively with her mother, Bharat Ratna Carnatic vocalist M. S. Subbulakshmi.
Jacqueline María Aguilera Marcano (born November 17, 1976 in Valencia, Carabobo) is a Venezuelan model and beauty queen who became the fifth woman from Venezuela to capture the Miss World crown.
 Former Miss World 1994 Aishwarya Rai handed over her crown to Aguilera after her reign as the Miss World for a year.
Anthony Durand (1956–2009) was a Native American potter from Picuris Pueblo, New Mexico, United States.
 He was born in Cortez, Colorado and raised by his grandparents at Picuris Pueblo.
 He attended primary and secondary school in Peñasco, New Mexico and college at New Mexico Highlands University.
 When he returned to Picuris in 1976, he became intent on preventing the Picuris micaceous tradition of pottery from dying out.
 He had an excellent teacher in his grandmother Cora Durand.
 In 1976, Cora and Francis Martinez were the only ones making traditional Picuris-style pottery.
 With inspiration from his grandmother, Anthony was producing pottery on a full-time basis within a year.
Zef Kolombi, an Albanian painter, was born on March 3, 1907 in Sarajevo.
 His father, John, who was the owner of a hotel in Sarajevo, died in 1910 and a year later, his mother died.
 Zef, along with his sister Vera, moved back to Shkodra to live with their grandmother.
 After the death of his grandmother, the two children were in the care of their godfather, Sokrat Shkreli.
Helen Tse MBE (born 1977) is a British author and restaurateur.
 Her most noted work has been "Sweet Mandarin", a memoir of three generations of Chinese women, beginning with her grandmother, Lily Kwok, establishing themselves in the Manchester area.
 Before she became an author and restaurateur she studied law at Cambridge University and then worked in finance and law for Clifford Chance and PricewaterhouseCoopers.
 In 2006 she won a "Young Accountant of the Year" award and in 2008 she was awarded an honorary doctorate from Staffordshire University for her "contribution to literature".