So far I think it has not been found.
it was found by sir galahad
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he was one of king Arthur's nights who found the holy grail
The term "holy grail" is not mentioned in the Bible.
Sir Lancelot looked for the holy grail, unfortunately he never found it
Monty Python: The Holy Grail was released in 1974.
The Production Budget for Monty Python and the Holy Grail was $400,000.
Galahad, Bors the Younger, and Percival achieve the Grail... source: http://en.wikipedia.org/wiki/Bors
In Arthurian legend, the three knights commonly associated with finding the Holy Grail are Sir Galahad, Sir Percival, and Sir Bors. These knights were considered the most pure and worthy of King Arthur's knights, and their quest for the Holy Grail symbolizes their spiritual purity and devotion to God.
Well, not really. For one, the biggest problem is people who search for the grail don't know what it really is. There are lots o possibilities of what the holy grail might be. So nobody ever recorded finding it. Many orders and groups proclaim they have the holy grail but nothing can be proven. So to answer your question, nobody knows, maybe somebody did, or it could still be hidden.
The Holy Grail is a myth. Even if there were one, it would have no relevance in Christianity.
Monty Python and the Holy Grail. Watch out for the attacking bunny.