Possible Clues:

• Financial administrator
• Fixed rate more stable for fund manager
• One of main officers of a society
• Betrayal with son disappearing - certain Rex who's got hold of the cash?
• Council official, one trying to restore confidence, loses heart after a short time
• A clubman by all accounts
• One may show you the money
• Fiscal officer
• Balance keeper?
• Incomplete deal with more reliable fund manager