Possible Clues:

• Opposite of morn, to a poet
• Nighttime, to a poet
• Last letters appropriate for October's last day
• Tho'
• "__ then would be some stooping": Browning
• Suffix with ''velvet''
• Day's end, in verse
• In the end, Shakespeare's flat
• As one was even shortly born up here (1'2)
• Dark'ning time