Holy

1. Holy Blood

   A book by M. Baigent, R. Leigh and H. Lincoln entitled The Holy Blood and the Holy Grail appeared in 1983. It claimed the Grail was no vessel but a bloodline or line of descent from a marriage of Jesus Christ and Mary Magdalen.

   
   

2. Holy Cemetery

   A graveyard and church, so named because it contained the bodies of Galahad, a son of Joseph of Arimathea, and Simeon, a follower.

   In the Knight of the Cart episode from the Vulgate Lancelot, Lancelot raises the stone on Galahad’s tomb, proving that he has the mettle to rescue Guinevere from Meleagant (Meleagaunce). Lancelot failed to raise Simeon’s tombstone - an adventure completed by his son Galahad during the Grail Quest.

   
   

3. Holy Grail
   Graal, Graaus, Graaux, Graus, Gradale, Greal, Graï, Grasal, Grëaus, Sangradale, Sangreal

   A mystical dish or cauldron of plenty. [More]

   
   

4. Holy Herb

   And ... there by the way [King Bagdemagus] found a branch of an holy herb that was the sign of the Sangreal, and no knight found such tokens but he were a good liver.
   
   - Malory

   Strangely, Bagdemagus is unlisted among knights who later achieve the Adventures of the Grail. Gawaine supposedly kills him sometime during the Quest, although the details are fuzzy.

   
   

5. Holy Island of Saint Cuthbert

   Nowadays called Medgaud.

   
   

6. Holy Lance

   A name used in the Post-Vulgate Suite du Merlin for the Lance of Longinus (Bleeding Lance), which a Roman soldier struck in the side of Jesus Christ.

   
   

7. Holy Land
   Latin: Terra Sancta

   Synonymous with both the Land of Israel and Palestine, and the term is used by Jews, Christians, and Muslims. Jerusalem is the holiest city to Judaism, the Isra and Mi'raj event in Islam, and the historical region of Jesus's ministry.

   
   

8. Holy Thorn

   See Glastonbury Thorn.