Our Lady of Victory / Our Lady of the Rosary

Fr. Finigan at The Hermeneutic of Continuity has the details regarding this feast day:

In 1571, at the Battle of Lepanto, the Christian fleet defeated the Ottoman fleet that was threatening to invade Europe. The Battle turned the course of events decisively, saving Christian Europe and liberating 15,000 Christians from slavery. Don John of Austria led the Christian fleet but the victory, one of the most decisive in history, was attributed by Pope Saint Pius V to the intercession of Our Lady of the Rosary. People had been praying the Rosary all over Europe but especially in Rome, asking our Lady for her protection and help.

In thanksgiving, St Pius V instituted the feast which was first called Our Lady of Victories and later Our Lady of the Rosary in thanksgiving to Our Lady for her intercession.

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