Marie_Theodor_Ratisbonne

Marie-Théodore Ratisbonne, N.D.S., (December 28, 1802 – January 10, 1884) was a French Jewish convert to the Catholic Church, who became a priest and missionary and who later founded the Congregation of Our Lady of Sion. He was the brother of Marie-Alphonse Ratisbonne, who joined him in this effort.