The name Facundo originates from the Late Latin name Facundus, meaning 'eloquent'. It has been borne by several early saints, including a 3rd-century Spanish martyr. The name is historically significant in Latin American culture, particularly through the book 'Facundo: Civilization and Barbarism' by Domingo Faustino Sarmiento, which explores the dichotomy between civilization and barbarism in 19th-century Argentina.