The angel Gabriel was sent by God to the village of Nazareth. He went to the home of a young girl called Mary, and greeted her,
“Hail, full of grace…” –cf. Luke 1: 26-28
This greeting is the basis of the title Lady of Grace. It was at this time that Mary became the mother of Jesus, that is to say, the mother of the author and dispenser of Grace.
The Order of Saint Augustine, since its very early days, has held special honor for Mary under the title Mother of Grace, or Lady of Grace.