What is the female lead in the 1939 film classic 'Gone with the Wind' called?

Explanation

'Gone with the Wind' is a novel written by Margaret Mitchell which was turned into a film in 1939, starring Clark Gable and Vivien Leigh. The film won 8 out of the 13 Oscars it was nominated for that year. Vivien Leigh won two Oscars for her performance as Scarlett O'Hara wheras Clark Gable 'only' won one Oscar for his role as Rhett Butler.