The wine merchant Peter Joseph Valckenberg (1764-1837) bought the historic vineyards of the famous single vineyard Liebfrauenstift-Kirchenstück in Worms (Rheinhessen) in the course of the Napoleonic secularisation in 1808. The "P.J. Valckenberg" vineyard developed from this. This is still partly owned by his descendants today and has since been renamed Liebfrauenstift. The Valckenberg company owns the sole right to use the traditional brand name "Madonna" for the wine Liebfrauenmilch. It is one of the most successful branded wines in the world. In the company's wine trade division, German wines from renowned wineries are sold to around 40 countries worldwide, the main market being Asia, especially China and Japan.