Possible Clues:

• ''Giles Goat-Boy'' author
• "Giles Goat-Boy" author
• “Giles Goat-Boy” writer
• City with abbey entertaining Rome's foremost theologian
• "The End of the Road" author John
• Letters he wrote were fictional
• 'Giles Goat-Boy' novelist
• "The End of the Road" novelist
• Author of 'The Sot-Weed Factor'
• "The Floating Opera" author