The Feast of Our Lady of the Rosary, celebrated in the Traditional Latin Mass, honors the Blessed Virgin Mary's powerful intercession through the prayer of the Rosary. This feast was instituted by Saint Pope Pius V in gratitude for her decisive role in the Christian victory at the Battle of Lepanto in 1571, where Catholic forces, outnumbered and facing defeat, triumphed over the Ottoman fleet after the pope called on all of Christendom to pray the Rosary for divine intervention. Known initially as Our Lady of Victory, this title emphasizes Mary’s protective guidance and powerful intercession for the Church. The feast unites the faithful in prayer, celebrating Mary's role as the patroness of the Rosary and invoking her help in the challenges of life.