Louis Roederer is a Champagne house based in Reims, France. It was founded in 1776, and has been owned by the property of the Rouzaud family since 1819, which makes it one of the few major Champagne houses to be family owned. It is most famous for producing the premium champagne Cristal. Tsar Nicholas II nominated Louis Roederer as the official wine supplier to the Imperial Court of Russia, and it thus became known as the 'Champagne of the Tsars'. The Russian Revolution and Prohibition in the United States caused the company to lose major ground during the early 20th century, though it quickly re-established itself during the Great Depression as an eminent wine-producer.