Related Clues:

• Tried hard, having brought out spades — what might be buried?
• Not having succeeded, struggled to reveal hidden valuables
• Finds time to go wandering
• One could use PR venture to vilify, partly spinning
• Clergyman about to back one of the selectors
• Valuable hoard
• Voter (anag.)
• First of treasure found on ramble
• Treasure of unknown ownership
• One making choice against old books with little hesitation
• Hoard of treasure initially found on ramble
• Introvert hiding valuable collection
• Time travel producing hidden riches
• Tried to remove lid, finding hoard of treasure
• One putting cross into box from left or right wing, perhaps?