
Italy · 13th Century
In 1228 in the Cathedral of Saint Paul the Apostle in Alatri, Italy, a Eucharistic miracle occurred that is distinguished by extensive papal documentation from the time of the event. The miracle began with a young woman who sought to regain the affections of her sweetheart through desperate means. In her distress, she consulted a sorceress who instructed her to steal a consecrated Host from the church to make a love potion—a practice rooted in medieval superstition and witchcraft that profaned the sacred Host by treating it as a magical ingredient.
During Mass, the young woman received Holy Communion but hid the consecrated Host in a cloth rather than consuming it, committing the grave sin of sacrilege. She brought the stolen Host to her home with the intention of using it for the sorceress's prescribed ritual. However, divine intervention transformed her plans entirely. When she arrived home and removed the Host from the cloth, she was horrified to discover that it had been transformed into bleeding human flesh—a visible manifestation of Christ's true presence and a rebuke to her sacrilegious intentions.
Terrified by what she had witnessed and overwhelmed with guilt and fear, the young woman hid the transformed Host in a chest where she kept bread, hoping to conceal the evidence of her sin. For three days the Host remained hidden while the young woman wrestled with her conscience. When she finally returned to the chest, she found not bread but a fragment of human flesh, confirming that the miraculous transformation was permanent and not a momentary vision. The young woman, unable to bear the weight of her guilt and fear, confessed her crime. The sorceress who had advised the theft also came forward and confessed her role in the sacrilege.
Bishop Giovanni V of Alatri immediately investigated the matter and reported the events to Pope Gregory IX. The Pope conducted his own investigation and on March 13, 1228, issued the papal bull 'Fraternitas Tuae' addressed to Bishop Giovanni V, providing authoritative testimony and recognition of the miracle. Pope Gregory IX interpreted this episode as a powerful visible sign from God against the various heresies of the time that denied the Real Presence of Jesus in the Eucharist. The miracle confirmed for the Pope and those who witnessed it that Jesus is truly present in the Eucharist—body, blood, soul, and divinity—as Catholic teaching maintains. The Pope mercifully pardoned the two repentant women, demonstrating that God's purpose was not condemnation but conversion and a public manifestation of Eucharistic truth.
The transformed Host—a fragment of human flesh—is still preserved today in the Cathedral of Alatri, displayed in a monstrance for the veneration of the faithful. This miracle is recognized as one of the four most important Eucharistic miracles in Italy, alongside those of Bolsena (1263), Lanciano (8th century), and Siena (1730). The papal bull 'Fraternitas Tuae' is represented pictorially on the cathedral walls of Alatri, and a commemorative medal was coined on the 750th anniversary of the miracle, showing the cathedral façade and reliquary on one side and a bust of Pope Gregory IX with the Papal Bull on the other.
This miracle has received explicit recognition from Vatican/papal authority through formal decrees, papal bulls, or official Holy See approval.
According to tradition, this miracle was extensively documented and approved by Pope Gregory IX in the Bull 'Fraternitas tuae' dated March 13, 1228, written in response to Bishop Giovanni V of Alatri's report of the miracle. The Pope is said to have interpreted the miracle as a sign against heresies denying the Real Presence and to have pardoned the repentant women involved. However, the Church's official magisterial records accessible through current databases do not contain formal documentation of this approval or recognition of this miracle. The relic has been preserved and venerated in Alatri Cathedral for nearly 800 years with Church approval.
Recognition status cross-referenced using Magisterium AI, a third-party tool that searches a corpus of Catholic Church documents. This does not constitute official Church verification.
Official Carlo Acutis exhibition page with complete narrative including the young woman, sorceress, Bishop Giovanni V, and Pope Gregory IX's bull 'Fraternitas Tuae'
Comprehensive PDF documentation with details about the papal bull, current preservation of the relic, and recognition as one of Italy's four major Eucharistic miracles; Site has expired SSL certificate but content is authoritative
Pilgrimage site information with practical details for visiting the Cathedral of Saint Paul, viewing the reliquary, and historical background
Catholic devotional perspective with theological reflection on God's mercy toward sinners and the miracle's anti-heretical significance