Dionysius Lardner Boursiquot (26 December c. 1820 – 18 September 1890), commonly known as Dion Boucicault, was an Irish actor and playwright famed for his melodramas. By the later part of the 19th century, Boucicault had become known on both sides of the Atlantic as one of the most successful actor-playwright-managers then in the English-speaking theatre.