Henrik Ibsen wrote both of the plays Ghosts and A Doll's House. He was a 19th century Norwegian playwright. He is sometimes called the "father of realism."

W. S. Gilbert and Arthur Sullivan were a librettist and composer, respectively, who began teaming up in the 1870s to write comic operas. Throughout the next few decades, Gilbert and Sullivan wrote some of the most well known works of theater, including The Pirates of Penzance, H.M.S. Pinafore, and The Mikado. Gilbert and Sullivan's work highly influenced the development of musical theater in the twentieth century.