Possible Clues:

• Straw breaking camel's back, doubly profligate
• Straw's negotiation with the Spanish is profligate
• Money waster
• No good for the law and the rest of it
• Prodigal son Walter excitedly embraces
• The rest in law will do for one no good
• A useless, good for nothing fellow
• Resource squanderer
• Prodigal son taken in by Walter transformed
• Ne'er-do-well in Walter's novel