What year was S. Aishwarya's grandmother born in?
Radha Viswanathan 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.
Kshitimohan Sen Kshitimohan Sen (2 December 1880 – 12 March 1960) was an Indian scholar, writer and a Sanskrit professor. He was an acting "Upacharyas" of Visva-Bharati University (1953–1954). He is the maternal grandfather of Amartya Sen.