The winery is located in the municipality of Johannisberg (part of Geisenheim) in the German wine-growing region of Rheingau. Emperor Napoleon (1769-1821) took possession of Johannisberg Castle in 1806 during his campaign against Prussia and handed it over to his marshal François-Étienne-Christophe Kellermann (1735-1820), the Duke of Valmy, for administration. However, there were three unsuccessful harvests between 1808 and 1810.

In 1811, the enterprising wine merchant Gottlieb Mumm (1782-1852) from the Frankfurt banking and trading family P. A. Mumm offered to purchase the entire next harvest from Schloss Johannisberg before the harvest. The marshal was pleased with the supposed hasbardeur, as the 32,000 guilders on offer was good money for what might be another poor harvest. But Gottlieb Mumm had the luck of the daring. The legendary vintage known as 1811 went down in wine history as the comet wine.
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Roman Horvath MW
Domäne Wachau (Wachau)