Possible Clues:

• Wearer of the triregnum crown
• Church leader goes from soft to loud, if not disturbed in between
• 63-Across, e.g
• Religious leader's page covering minor argument
• Church leader needs pollsters to overturn argument
• Religious leader in power — looking back, no difference
• Pope and priest working on disagreement
• Powerful bishop and pawn on row
• Head of the Roman Catholic Church
• Francis, since 2013