[Updated] The Power of the Rosary

The Blessed Virgin Mary presenting the Rosary
to St. Dominic: The Vision of Saint Dominic,
Bernardo Cavallino, 1640 

According to pious tradition, the Rosary was given to Saint Dominic in an apparition of the Virgin Mary in the year 1214. In the 15th century, it was promoted by Alanus de Rupe (St. Alan of the Rock), a Dominican priest and theologian, who established the "fifteen rosary