Possible Clues:

• Grim wake distressed one of those designing the new locks
• Hairpiece creator
• Manufacturer of locks has a job designing stuff that goes over many people's heads
• Grim wake organised for one of those hair-raising figures
• Grim wake organised for one of those hair-raising types
• Lock manufacturer?
• Prepares new thatch with extension on top for one's God
• Expert with locks?
• One good perm ultimately stops person coming to him ?