Simple Souls (1920)

When the Duke of Wynninghame, a "simple soul" who prefers science to royalty, meets Molly Shine, a London shop girl, he is enthralled by her love of books and begins to send her two pounds weekly so that she can purchase the books that she adores. Molly's mother discovers the money and, assuming that the duke is paying her daughter for immoral reasons, drags the girl to the duke's home, where she charges him with seduction. The duke good-naturedly agrees to marry Molly, and then ignores her. Molly loves her husband, but his neglect, coupled with the enmity of Octavia, the duke's sister, compels her to leave. As she prepares to flee, the duke realizes that he has fallen in love with his wife, and the two face a happy future together.