Géraud-Marie de Sède, baron de Liéoux (5 June 1921 – 29 May 2004) was a French author, writing under the nom-de-plume of Gérard de Sède, and a member of various surrealist organizations. He was born into an aristocratic family from Comminges, the son of Marcel Alfred Gustave de Sède, baron de Liéoux and Aimée de Sède de Liéoux 's first cousins, once removed. De Sède's father was the senior editor of the Catholic newspaper "Le Courrier du Pas-de-Calais" owned by the De Sède family.