Vivien Leigh wanted to play Cathy in Wuthering Heights opposite Laurence Olivier, didn’t get that part so took Scarlett O’Hara instead, won an Oscar and married Laurence Olivier a year later. GWTW is also quite a saga.
GONE WITH THE WIND
Victor Fleming
1939
Clark Gable, Vivien Leigh, Leslie Howard, Olivia de Havilland, Hattie McDaniel
Screenplay by Sidney Howard; adapted from the novel Gone with the Wind by Margaret Mitchell