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
Queen of Heaven is sung in the time from Trinity Sunday until the Saturday before the first Sunday of Advent. In the vernacular, as a prayer to the Virgin Mary, the Hail Holy Queen is the final prayer of the Rosary. A German Benedictine monk, Hermann of Reichenau (1013–1054), allegedly composed it and it originally appeared in Latin, the prevalent language of the Catholic Church until Vatican II. Traditionally it has been sung in Latin, though many translations exist. In the Middle Ages, "Salve Regina" offices were held every Saturday. In the 13th century, the custom developed to greet the Queen of Heaven