The International Union of Catholic Esperantists (Esperanto: Internacia Katolika Unuiĝo Esperantista, IKUE) is an organization of Catholic Esperanto speakers. It was founded in 1910 in Paris and is now headquartered in Rome.One of the founders, Titus Brandsma was later canonised as a saint for his martyrdom.The patron saints of the union are Our Lady of Hope, Father Titus, Pope John Paul II, Maximilian Kolbe and Pope Pius X. Source: Wikipedia (en)