Mary, Mother of Grace (Latin: Maria Mater Gratiae) is a Roman Catholic prayer to the Blessed Virgin Mary.
This prayer is a fragment from within the DEVOTION IN MEMORY OF THE AGONY OF JESUS found in Section VI of the Raccolta. It was originally declared by Pope Pius VII as part of a Rescript dated August 26, 1814, issued through the Cardinal-Prefect of the Sacred Congregation of Rites. Pope Pius gave his approbation to the devotion in memory of the Agony of our Lord and Saviour Jesus Christ; granting at the same time an indulgence to all the faithful every time they devoutly say the complete Devotion. Since the "Mary, Mother of Grace" prayer is only a partial recitation of the Devotion, only a partial indulgence is granted the prayer.
The original Rescript is preserved amongst the acts of the Sacred Congregation of Rites, and an authentic copy of it is kept in the Segretaria of the Sacred Congregation for Indulgences.
The title, "Mary, Mother of Grace" is actually a misnomer. In the text of the Racollta containing the prayer, the title reads: "Prayer to the Holy Virgin, Mother of Sorrows"
The entire section within which the fragment originates from the overall Devotion reads: