Possible Clues:

• Celebrated reply to unlucky Edward's proposal
• Letter on top of desk is prominent
• Famous school sent up by duke
• Observed or took account of
• Observed that what's tedious with this will be for IOUs
• Took account of empty theatre in sign of agreement
• That isn't the famous editor
• Well-known and set to music
• Carefully observed the famous
• Picked up on