Possible Clues:

• Neckwear fit for a king generates cash for writers
• Payments made for palace neckwear?
• Instrument makers from Birmingham (at Italian rates)
• Payments owing links to the crown?
• Appropriate payments for Henry James and Edward Lear?
• *Composer's due
• Patent holder's income
• Ruler's kin will accrue to author
• High level connections produce percentage payments
• Publisher's department