Possible Clues:

• Sandy companion of Hannay
• John --, Scot who wrote 'The History of John Bull'
• Epistle to Dr ____, Pope poem which introduced the phrase “damn with faint praise”
• Broth aunt brewed up for friend of Hannay
• 'Sandy' --, a character in various John Buchan books in the Richard Hannay series
• Queen Anne died despite Johnson's 'most universal genius'
• Shy in England, she helped Stevenson in France
• Norton Quartet is afire