Ad Iesum per Mariam — “To Jesus through Mary”

The chapel of the Madonna del Miracolo in Sant’Andrea delle Fratte, Rome

Sant’Andrea delle Fratte, Rome · 20 January 1842

Our Lady of Zion

Ratisbonne described a silent encounter with Mary that he understood as a call to conversion.Editorial summary · Catholic Encyclopedia, Maria Alphonse Ratisbonne

Sant’Andrea delle Fratte · Wikimedia Commons (CC BY-SA)

Place

Sant’Andrea delle Fratte, Rome

Dates

20 January 1842

Visionary

Alphonse Ratisbonne

Feast

20 January

Church status

Related Holy See act or documentHistorical shrine and devotion

Vicariate of Rome (Holy See)

01 · Overview

The encounter at a glance

Alphonse Ratisbonne entered Sant’Andrea delle Fratte in Rome on 20 January 1842 without intending to become Catholic. He was a young man from a Jewish family in Strasbourg, travelling in Italy and sceptical of Christianity. A Catholic acquaintance, Baron de Bussières, had persuaded him to wear a Miraculous Medal and accept a Marian prayer. The visit to the church began as an incidental stop while the baron attended to funeral arrangements.

What followed is known through Ratisbonne’s own testimony and the inquiry that examined it. He reported a sudden encounter with Mary, whom he described in the likeness of the medal. No spoken message was necessary in his account: he experienced the encounter as an overwhelming recognition of the Catholic faith. He asked for instruction and baptism. The Vicariate of Rome investigated, and on 3 June 1842 Cardinal Costantino Patrizi recognized the extraordinary conversion as miraculous.

The story’s significance lies in the life that followed, not only in the suddenness of the experience. Ratisbonne became a priest and worked with the family of Our Lady of Sion in the Holy Land. Today Catholics can receive his testimony as a story of personal grace while rejecting contempt for Jewish people or their faith. Mary, Jesus, and the apostles belong to Israel’s history. A conversion story is not permission to diminish that inheritance; its Christian fruit must be humility, freedom, and love.

5 min read
ConversionIsrael and the ChurchThe Miraculous Medal

Source panel

Sources and Church documents

Church documents, shrine accounts, historical studies, and explanatory sources are labelled separately. Reported encounters are attributed to their sources; original spiritual commentary is distinguished from an official Church judgement.

Last reviewed: September 2026

Image: Sant’Andrea delle Fratte · Wikimedia Commons (CC BY-SA)

  1. 01
  2. 02
    Historical referenceCatholic Encyclopedia · Maria Alphonse Ratisbonne

    A historical reference; its period language about Judaism is not adopted as this site’s editorial voice.

  3. 03