Mary of the Day (July 20) – B. VERGINE DELLE GRAZIE, SUPERGA (TORINO)
During the siege of Turin, by the French troops, in 1706, Victor Amadeus II vowed to Mary to erect on the hill of Superga a Sanctuary as a spiritual defense of the City and imperishable gratitude for the powerful help that Mary had always granted to the his people. The small troops of Piedmont, aided by the Austrians, in a field battle were successful and Turin, with all of Piedmont, had secured their own freedom. The field battle took place where now stands the Sanctuary of the Madonna della Salute, in Borgo Vittoria. For a long time, Mary was preparing Turin to welcome and cherish the title with which she wanted to be honored one day: Mary, the Help of Christians.
Sources:
http://www.latheotokos.it/programmi/FESTE_MARIANE/16—31-luglio.html
https://izi.travel/en/1be0-the-basilica-of-superga/en