In Christian mythology, the Holy Grail was the cup from which Jesus drank at the Last Supper. It was said to have the power to heal all wounds. The Grail (Graal) was a magic vessel that could heal and renew youth, and has mythological roots that connect it to earlier Pagan fertility myths and their related talismans along with the concept of a symbiotic union between the king and the land. From this perspective, like the Cauldron of Cerredwen, the Celtic Goddess, it is a womb/chalice symbol related to the death/birth powers of the great Goddess and Her blood.
The legend was that the Grail was brought to Britain by Joseph of Arimathea, a disciple of Christ, when he traveled to the British Isles. In the Arthurian tales, a number of knights undertook the quest to find the lost Grail. Some tell of knights who succeeded, like Percivale or the virginal Galahad; others tell of knights who failed to find the mystic Grail because of flaws or impurities within them, like Lancelot. The fate of the Holy Grail is unknown was ultimately unknown, perhaps being withdrawn from the world because of it‘s increasing corruption (and myth logically speaking, with the continuing diminishment of the Goddess). Ownership of the Grail has been attributed to the Knights Templar, among other secret societies; other stories claim that the Grail is to be found deep in the spring at Glastonbury Tor, which ironically was once a spring sacred to the Celtic Goddess Bridgit, after whom the British Isles were named.