October 7
Our Lady of the Rosary is invoked as patron of the rosary. The Memorial of Our Lady of the Rosary commemorates the Christian victory over the Ottoman fleet at the Gulf of Lepanto on 7 October 1571. Pope Saint Pius V, a Dominican, had called for public processions of the Rosary throughout the Papal States during the campaign and on the day of battle. Sources: https://www.vatican.va/content/john-paul-ii/en/apost_letters/2002/documents/hf_jp-ii_apl_20021016_rosarium-virginis-mariae.html.