Mariology of the saints Marian veneration is the best. Canisius tried to show a practical rationale for Marian devotion and defended it against opposing Protestant arguments. His lasting contribution to this "applied mariology" are his three catechisms, which he published in Latin and German, and which became widespread and popular in Catholic regions. Under the heading "prayer" he explains the Ave Maria, (Hail Mary), as the basis for Catholic Marian piety. Less known are his Marian books, in which he published prayers and contemplative texts. He is credited with adding to the Hail Mary the sentence "Holy Mary, Mother of God, pray for us
History of Catholic Mariology a dogma, a position shared by Pope Pius IX. The concept of Co-Redemptrix was also discussed but left open. In its support, Council fathers highlighted the divine motherhood of Mary and called her the mother of all graces. "Rosary Pope" is a title given to Pope Leo XIII (1878–1903) because he issued a record eleven encyclicals on the rosary, instituted the Catholic custom of daily rosary prayer during the month of October, and in 1883 created the Feast of "Queen of the Holy Rosary". John Henry Newman, wrote of the Eve-Mary parallel in support of Mary’s original state of grace