Related Clues:

• Roman Catholic priest's cap
• Square cap worn by Roman Catholic clergy
• Religious classes held in part by volunteers? Cleric takes this on himself
• Ornate tile in Catholic church maybe
• Priest's assumption about the crown
• Bishop requiring one, milliner's heading off, turning up with this?
• Stiff clerical cap
• Cardinal's red cap
• It's made by some rising hatter, I believe
• Bishop with strange attire, ecclesiastical headgear
• Bishop's attire? Possibly
• Strange attire topped by black cap
• Clerical cap
• 'eadwear manufacturer, one bishop promoted, produces this?
• Battier (anag.)