Marquis Louis de Beaufront (1855--1935) was an early advocate of Esperanto and was almost solely responsible for its early diffusion in western Europe as well as the first French Esperantist.
Marquis Louis de Beaufront (1855--1935) was a major influence in the development of Ido, an international auxiliary language. Beaufront was initially an advocate of Esperanto and was almost solely responsible for its early diffusion in western Europe as well as the first French Esperantist.