Possible Clues:

• 'The First ___' (Christmas carol)
• Caroling song
• Seasonal refrain
• Name that's a name backward
• It's Christmas in France
• "The First __"
• Coward with a knighthood
• Gallagher who didn't smash melons
• Sir Coward
• "The Great British Baking Show" co-host Fielding