In 'The Da Vinci Code' by Dan Brown, Jacques Saunière (spelled 'Sauniere' in the question) is the curator of the Louvre Museum in Paris. He is also the Grand Master of the Priory of Sion and his murder sets the plot in motion. Note: the character name should be spelled 'Saunière' with the grave accent, and the museum name is 'The Louvre' (not 'Musée d'Orsay' or 'Musée de l'Armée').