Svetlana Alliluyeva

Svetlana Iosifovna Alliluyeva (28 February 1926 – 22 November 2011), later known as Lana Peters, was the youngest child and only daughter of Soviet leader Joseph Stalin and his second wife Nadezhda Alliluyeva. 
In 1967, she defected to the United States and, in 1978, became a naturalized citizen. From 1984 to 1986, she briefly returned to the Soviet Union and had her Soviet citizenship was given back. She was Stalin's last surviving child.
Alliluyeva died on 22 November 2011 at a hospital in Richland Center, Wisconsin from problems caused by colon cancer, aged 85.