Despite its lack of traditional prestige, the wine proved successful, and in order to repeat the success the following year, de Rothschild had to turn to neighbouring vineyards for sourced fruit. Initially labeled with the appellation of Pauillac, the increasing demand caused the sourcing of grapes to expand to nearby appellations Saint-Estèphe and Haut-Médoc. Over the following years, the wine came to include grapes from an even greater area, until production stopped with World War II. The wine was reborn after the war, and gained a Bordeaux AOC classification in 1947, steadily increasing in popularity due to a reputation of consistent quality. In later years the wine relies heavily on grapes sourced from the Entre-Deux-Mers district.