The Brie is famous for its grain and its dairy products, especially cheeses.
It is situated in the fertile district of Brie, in a valley watered by the Grand-Morin.
Although the county of Champagne had descended to his wife's infant daughter, Joan, Edmund assumed the title "Count Palatine of Champagne and Brie," and is described in the English patent rolls as earl of Lancaster and Champagne.
Among the products are cotton fabrics and garments, beer, and Camembert and Brie cheeses.
Chateau-Thierry was formerly the capital of the district of Brie Pouilleuse, and received the title of duchy from Charles IX.