Accompanied by his friends Abdul and the Poet, the title character, the ward of Frederick Barbarossa, attempts to travel to the East to bring the Holy Grail to the kingdom of Prester John.  
Throughout this novel, the title character relies on his natural abilities of learning languages and telling lies.  The main characters are induced by the effects of a mystical green honey to create the lie at the center of this novel, but are pre-empted in their efforts by the mystic Zosimos.  Accompanied by his friends Abdul and the Poet, the title character, the ward of Frederick Barbarossa, attempts to travel to the East to bring the Holy Grail to the kingdom of Prester John.  FTP, identify this most recent novel written by Umberto Eco.
Throughout this novel, the title character relies on his natural abilities of learning languages and telling lies.  
Baudolino