One of the most complete documents about the Eucharistic Miracle is told of the Eucharistic miracle of Walldürn Germany in the year 1330 and was written by the Monk Hoffius in 1589. During the Mass, a priest accidentally overturned the Sacred Species of the consecrated Wine onto the corporal. The Sacred Blood formed an Image of the Crucified Christ on the corporal. The relic of the corporal with the Blood is preserved today, placed on the side altar in the minor basilica of Saint George in Walldürn. Every year, several thousands of pilgrims visit Walldürn to venerate the sacred relic.
It seems the priest, Heinrich Otta, was celebrating the Holy Mass when he accidentally overturned the chalice containing the Sacred Species; the consecrated Wine that had been transformed into the Blood of Christ. Immediately upon spilling, the Precious Blood formed on the corporal an image of the Crucified Christ, surrounded by eleven identical images of the Head of Christ crowned with thorns
The priest did not have the courage to reveal the miracle and for many years he kept the corporal hidden under the altar. It was only near the point of his death that he confessed, then told the story of the event and revealed the corporal.
From the beginning, the reliquary of the corporal has had much veneration, and many conversions and miraculous recoveries are attributed to this. Pope Eugene IV confirmed the miracle in 1445 and granted some indulgences. The miracle was famous across Europe and for centuries was depicted by many artists. The actual basilica was constructed between 1698 and 1728 by Franz Lothar von Schonborn, the Archbishop of Mainz. In 1962, Pope John XXIII elevated the church to a minor basilica. Augustinian monks have protected the basilica since 1938.