What is "saint-fiacre"

Saint-Fiacre is the name or partial name of four communes in France.

• Saint-Fiacre, Côtes-d'Armor, in the Côtes-d'Armor département
• Saint-Fiacre, Seine-et-Marne, in the Seine-et-Marne département
• Saint-Fiacre-sur-Maine, in the Loire-Atlantique département
• Cuy-Saint-Fiacre in the Seine-Maritime département