Possible Clues:

• Becquerel who shared a Nobel Prize in Physics with the Curies
• Painter Rousseau or Matisse
• Mr. Matisse
• 1927 literary Nobelist Bergson
• US artist coming from hotel, half-improved
• It was shared by Matisse and Toulouse-Lautrec
• — Matisse, French artist
• Matisse, Rousseau or Toulouse-Lautrec
• --- Matisse, French artist
• French royal name