Possible Clues:

• Arthur —, French poet
• Poet having the edge when it comes to speed of transmission
• Poet sounds like a violent tough
• French poet shows right identity to absorb business degree at university
• Rhode Island graduate in business administration with posh daughter becomes French poet
• Arthur --, French poet (1854-91)
• Frost endlessly unpleasant about upper-class poet
• Border with unopened flower enthrals a poet
• 19th century poet who called 51-Across his 'beautiful madness'
• French poet sounds a mindless brute