(NEWSER) – Historians claim that a goblet long identified as belonging to the daughter of an 11th-century Spanish king has actually housed the Holy Grail—and has been sitting in a basilica in the northwestern city of León for nearly a thousand years. A three-year quest that began at a Cairo University in 2011 led medieval history lecturer Margarita Torres and art historian José Manuel Ortega del Rio to determine the jewel-adorned onyx goblet is the one Jesus Christ used at his last supper, and was contained within the "Chalice of Doña Urruca"; the two presented their theory in a book out last week called Kings of Grail.

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