Beginning in the 1870s, a great many Bretons--men and women from Brittany, a region in western France--began arriving in Paris. Every age has its pariahs, and in 1900, the "pariahs of Paris" were the Bretons, the last distinct group of provincials to come en masse to the capital city. The pariah designation took hold in Paris, in Brittany, and among historians. Yet the derision of recent migrants can be temporary. Tracing the changing status...