Dom Pérignon was the 17th century Benedictine monk who has gone down in history as the person who "invented" Champagne. His name was originally registered by Eugène Mercier. He sold the brand name to Moët & Chandon, which used it as the name for its prestige cuvée, which was first released in 1937.
A rigorous selection process in both the vineyard and winery ensures that only the best grapes go into Dom Pérignon champagne. Chardonnay and Pinot Noir are used in roughly equal proportions without one variety dominating the other.