Raintree County (1957)

An abolitionist John Wickliff Shawnessy drifts away from his high school sweetheart Nell Gaither and enters into a passionate love affair with a wealthy New Orleans belle Susanna Drake but is tricked into marrying her when she falsely tells him that she is pregnant. But even after Susanna tells him the truth his still stays with her out of love. But John soon learns that Susanna is hiding a dark secret which leads her into madness. This madness causes Susanna to flee to the South during the Civil War taking their son with her. John leaves home and enlisting in the Northern Army as his only means to pursue Susanna.