Possible Clues:

• "Any man's death diminishes me" writer
• “No man is an island” poet
• Poet who wrote 'For God's sake hold your tongue, and let me love'
• Poet sounds exhausted
• “An Anatomy of the World” poet John
• “Death, be not proud” poet
• Poet who originated the phrase 'For whom the bell tolls'
• John who wrote the sonnet 'Death Be Not Proud'
• John —, English poet
• Letters from London nearly delivered for poet