Louis Jacques Napoléon Bertrand, better known by his pen name Aloysius Bertrand (20 April 1807 — 29 April 1841), was a French Romantic poet, playwright and journalist. He is famous for having introduced prose poetry in French literature, and is considered a forerunner of the Symbolist movement. His masterpiece is the collection of prose poems Gaspard de la Nuit published posthumously in 1842 (but probably mostly written already in 1827); though relatively ignored at the time, the book later had a huge influence on Charles Baudelaire's Spleen de Paris, the Symbolists and on the Surrealist movement. Three of its poems were adapted to an eponymous piano suite by Maurice Ravel in 1908.