Marie-Julie Jahenny Breton pronunciation: [maˈʁiː ʒyˈliː ʒaɛˈniː] (Coyault, Blain, 12 February 1850 – La Fraudais, 4 March 1941) was a Breton woman considered by some to be a mystic and stigmatist.

Marie-Julie Jahenny was born the eldest of five children born to peasants Charles and Marie Boya Jahenny.^[1] She later joined the Third Order of Saint Francis.^[2]

Jahenny reported that on February 22, 1873, she experienced an apparition of Mary. From the age of twenty-three until her death, she bore the stigmata and suffered attacks from the devil. She also allegedly experienced extraordinary periods of fasting, and had the gift of prophecy and miracles.^[3]

During her life, she reported several apparitions of the Blessed Virgin Mary and Jesus Christ through which she purportedly received prophecies about the end of the world, the Great Catholic Monarch, punishment for the sins of the people, the destruction of Paris through civil war, the Three Days of Darkness, and the coming of the Antichrist.

Marie-Julie predicted numerous chastisements for sin that would fall first on France then spread to the rest of the world. These include: earthquakes, unprecedented destruction through storms, failed harvests, unknown plagues that would spread rapidly plus the cures for them, a "Blood Rain" that would fall for seven weeks, civil war in France that apparently would be started by conspirators in the government, the persecution of the Catholic Church with the total closure of all churches and religious houses, persecution and slaughter of Christians, the destruction of Paris, a Two Day period of Darkness that would come circa a month before the Three Days of Darkness. The coming of the Great Monarch would also be announced by signs in the sky. She also had visions of the Angelic Pontiff who would reign at the same time of the Great Monarch, and that both these great leaders were destined to restore the Catholic Church.^[4] Her house has been transformed into a sanctuary, which bears her name, in Blain, near Nantes where she is buried in the cemetery.

In her apparitions, Jahenny was told to promote a Purple Scapular, which was to be displayed in homes and worn to provide protection during the End Times and the Three Days of Darkness.

• Visions of Jesus and Mary