Svetlana Alliluyeva

Svetlana Iosifovna Alliluyeva (Russian: Светла́на Ио́сифовна Аллилу́ева, Georgian: სვეტლანა ალილუევა; 28 February 1926 – 22 November 2011), later known as Lana Peters (Georgian: ლანა პეტერსი), was the youngest child and only daughter of Soviet Premier Joseph Stalin and Nadezhda Alliluyeva, Stalin's second wife. In 1967, she caused an international furor when she defected and became a naturalized citizen of the United States until 1984 when she returned to the Soviet Union and had her Soviet citizenship returned. She later went back to the United States and also spent time in the United Kingdom. At the time of her death she was the last surviving child of Stalin.

(from Wikipedia)