Possible Clues:

• Rains of "Casablanca"
• Old artist getting praise in church
• Georges --, French chemist credited with the invention of neon lighting for signs
• A man to praise in church
• Main character in 'Hair'
• Rains in a studio
• A Frenchman offering praise in church
• Painter gets praise in church
• French painter archbishop's brought into church
• Boy inserts parts of ad in this, for example