Léon Jouhaux was a French trade union leader who received the Nobel Peace Prize in 1951. The Nobel Peace Prize 1951, announced November 5, 1951. Léon Jouhaux, “for having devoted his life to the fight against war through the promotion of social justice and brotherhood among men and nations”. Léon Jouhaux: born 1879, Paris, France. Wiki link Data: the Nobel Foundation (CC0).