Every January 20th, since 1842, we remember and give thanks for the extraordinary and life-changing experience of grace, mercy and love granted to Alphonse Ratisbonne through Mary at a side altar of the church of Sant’Andrea delle Fratte. Alphonse’s experience with Mary became one of the signs of confirmation for Theodore Ratisbonne to found the Congregation of the sisters of Notre Dame de Sion, “to witness in the Church and in the world to God’s faithful love for the Jewish people and to his fidelity to the promises revealed to the patriarchs and prophets of Israel for all humanity”.