According to an old, very widespread legend, an icon of the Saviour would have bled after being stabbed with a lance by the Jews of Beirut. The blood poured out by this icon was considered to be so worth worshipping, that it became widespread in Western Europe. Moreover, the story was yearly commemorated in Rome since at least the 10th century as a specific feast in honor of icons, being equivalent to the Byzantine Feast of Orthodoxy and known as the Feast of the Saviour on November 9. This paper investigates the origins and developments of this legends in texts and images from the 8th to the 15th century.