Charles-Auguste Bontemps (1893 Nievre-1981 )was a french individualist anarchist, pacifist, freethinker-atheist and naturist writer and activist. He wrote alongside the anarcho-communist Maurice Joyeux the founding principles of the Federation Anarchiste. Among the publications in which he wrote include Le Monde libertaire, Liberté, Le Droit de vivre, La Raison, Le Réfractaire. He defended what he called "social individualism" and "a collectivism of things and an individualism of persons".
More on Bontemps here in an entry on him in french at the International Dictionary of Anarchist Militants. Source of the photo here.
