Possible Clues:

• 'Weir of Hermiston' author, in brief
• Monogram of Dr. Jekyll's creator
• “Kidnapped” author’s initials
• Author of a classic novel about treasure hunters: Abbr
• Monogram of the "Treasure Island" author
• ''Kidnapped'' initials
• 'The Body Snatcher' author's inits.
• Creator of Billy Bones: inits.
• 'A Footnote to History' author's inits.
• Author admired by Sirs ACD and JMB