Galina Pavlovna Vishnevskaya (née Ivanova, Russian: Гали́на Па́вловна Вишне́вская; 25 October 1926 – 11 December 2012) was a Russian soprano opera singer and recitalist who was named a People’s Artist of the USSR in 1966. She was the wife of cellist Mstislav Rostropovich, and mother to their two daughters, Olga and Elena Rostropovich.

https://en.wikipedia.org/wiki/Galina_Vishnevskaya