Escape of the Duke of Lorraine
During the Thirty Years' War, the Duke of Lorraine
and his wife were held as prisoners within the walls of Nancy, the capital city of Lorraine, at the orders of the King of France. But on April 1, 1634, the Duke and Duchess escaped by disguising themselves as peasants and walking out through the front gate of the city. Their escape was almost foiled when a peasant recognized them and ran to tell a soldier, who communicated the news to his commanding officer. However, it being April 1st, the officer thought he was being made an April Fool (or a Poisson d'Avril, as the French say) and didn't believe the report. By the time the French realized the report of the escape wasn't a joke, the Duke and Duchess were too far away to be overtaken.