At Fécamp in Normandy, there is a miracle story that precedes the development of the Grail legends. The story originated ca. 1090 as a eucharistic miracle story (bread & wine converted to real flesh & blood) (Vincent, 'The Holy Blood', 2001). Later, ca. 1120, Baldric was the first to relate a new version in order to elevate Fecamp's status. Supposedly hidden while the abbey was being rebuilt, the blood relic reappeared in 1171. It relates how Nicodemus scraped the blood from Jesus' corpse, and his nephew Isaac placed it in the sea in the trunk of a fig tree, which landed near Fecamp. The newer, now common, version is related to the blood-capturing legend in a 5th century Georgian text.
   Here are some sources for Fecamp's lead tube cum blood, but not a chalice: Ashe (King Arthur's Avalon, 241-2; Nitze, "The Fisher King . . ." 1909 (365-418) 400f.
   "When Nicodemus helped bury the Lord he took a knife and scraped off some of the dried blood and concealed it in a glove. He gave it to his nephew Isaac. Isaac's wife accused him of idolatry and left him. Isaac went to Sidon. Learning Jerusalem would soon fall, he placed the blood and knife in two lead tubes and hid them inside the trunk of a fig-tree. At God's bidding, he cast the trunk into the Mediterranean; where it ran aground near Fécamp in Normandy."