Possible Clues:

• Bore, largely, keeping pound in the UK, perhaps
• As a rule, genuinely grand
• Peers are possessed by this field of study
• Honest Frenchman's domain
• That's one genuine, grand kingdom
• Kingdom could be lamer
• In maybe five hundred sheets, fifty for the kingdom
• As a rule that might be grand, actually
• Five hundred sheets about fifty
• Actually, it's grand for the kingdom