Joseph-Marie Timon-David was a 19th-century French Catholic priest and theologian who dedicated his life to the religious education of working-class youth. Born in Marseille in 1823, he was deeply influenced by his studies in Switzerland and Paris. He founded the Timon David Fathers to support his educational mission and served as the congregation's superior general. Known for his devotion to the Sacred Heart, he developed specific methods to engage young laborers through festive activities and spiritual guidance, aiming to lead them toward holiness.