What is Monsieur Benoit's occupation in the novel, Akin?

Monsieur Benoit is a man who works as a historical archivist in Nice. Noah asks Benoit to see if he can find any relevant information that might shed light on Margot’s photographs and the initials written on them. Benoit helps Noah discover that Margot worked as a member of the French Resistance during World War II. Benoit also discovers the identity of one of the children whom Margot helped to save.