L'ancêtre ("The Anscestor") is a 1905 drame lyrique in 3 acts by Camille Saint-Saëns to a libretto by Lucien Augé de Lassus (1841-1914). The opera premiered at the Opéra de Monte-Carlo on February 24, 1906, and was directed by Raoul Gunsbourg and conducted by Léon Jehin. Celebrated soprano Geraldine Farrar created the role of Margarita. The vocal score, published in 1906 by Durand et Fils of Paris has a dedication to Albert I, Prince of Monaco. The plot is set during the First French Empire in Corsica, which composer and librettist visited together, looking for local colour.