Possible Clues:

• Humorously sarcastic study from poet
• Study getting to bottom of dull poet
• Waterproof lair of Stuart dramatist
• Waterproof lair of Restoration dramatist
• Poet from central London turning up outside resort
• Remove water from private room for poet
• It's for the poet not to have had a damp lair
• ''Fool that I was'' poet John
• "Marriage à la Mode" playwright
• Restoration poet dubbed "Glorious John"