Mareuil-sur-Ay
Mareuil-sur-Ay is a former commune in the Marne department in north-eastern France. Since January 2016, Mareuil-sur-Aÿ is part of the administrative commune Aÿ-Champagne. Its population was 1,177 in 2017.Its vineyards are located in the Vallée de la Marne subregion of Champagne, and are classified as Premier Cru in the Champagne vineyard classification. Together with Tauxières-Mutry it is the highest rated of the Premier Cru villages, and has therefore just missed out on Grand Cru status.