Possible Clues:

• Dramatist who distinguished himself at Blenheim
• Architect's trade vehicle, brown and horrible
• Sir John —, English baroque architect
• Playwright and architect of Blenheim Palace
• Architect's vehicle builder emptied - disgusting!
• Notes on a way of dying, say, in place of torment
• Sir John - - , English architect and dramatist 1664-1726
• Blenheim, Castle Howard architect