King Arthur in Legend: The Holy Grail. The Tradition: The Holy Grail was a vessel used by Christ at the Last Supper. Given to his grand-uncle, St. Joseph of Arimathea, it was used by him to collect Christ’s blood and sweat while Joseph tended him on the Cross.Click to see full answer. Keeping this in view, what does the Holy Grail symbolize in King Arthur?The Holy Grail is a dish, plate or cup said to have been used by Jesus at the Last Supper and is an important symbol in the Arthurian myth. Thus, the Holy Grail represents not only spiritual perfection, but also the human perfection Arthur believes is fundamental to humanity.Furthermore, why did King Arthur want to find the Holy Grail? The mythical literary figure, King Arthur, was said to coordinate great spiritual expeditions to search for the enigmatic relic. Legends hold that the Grail had the power to heal all wounds, deliver eternal youth and grant everlasting happiness. Keeping this in view, where was the Holy Grail found in King Arthur? Locations associated with the Holy Grail One of the most prominent is Glastonbury in Somerset, England. Glastonbury was associated with King Arthur and his resting place of Avalon by the 12th century. In the 13th century, a legend arose that Joseph of Arimathea was the founder of Glastonbury Abbey.Who found the Holy Grail King Arthur? Galahad