Possible Clues:

• Blare 'adieu' when this French poet goes off?
• Charles --, French poet noted for his macabre imagery
• Poet, one mostly accepted by Orwell, G
• Orwell, G. embracing English-born poet cut French one
• Poet pal of Manet
• French poet and critic, d. 1867 — audible ear (anag)
• Are audible errors a clue to this poet?
• 'Le Spleen de Paris' poet
• French poet, readable I suspect around university
• He laid his heart bare in autobiography