Possible Clues:

• The worst description of poor purses?
• Rich American follows Shakespearean
• Successful prose pours out
• Wealthy American backs Duke of Milan
• Rich island ruler taking on America
• How might us poor reps get rich?
• Well-to-do
• Affluent American meeting the rightful Duke of Milan
• Well-heeled American pursuing Miranda's father
• Rich and poor with purses switched