Robert Louis Stevenson 
Prince Otto, a Romance 

Sir Arthur Ignatius Conan Doyle (22 May 1859 – 7 July 1930) was a Scottish writer and physician, most noted for his fictional stories about the detective Sherlock Holmes, which are generally considered milestones in the field of crime fiction. This lesser known work "A Duet, with an Occasional Chorus" by Doyle is about two young people who are very much in love. (Excerpt from Wikipedia)