The holy grail was quested by Sir Percival before being replaced by sir Galahad.
The holy grail is referred to as a cup that has importance in the Literature concerning King Authur who was a renowned British king from the fifth century.
An illiterate man by the name of Percival aspired to serve as a knight of King Arthur. He was unattractive and unqualified for the position, and teased by people.
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