At the end of the 18th century, a new owner arrives in our Chateaux’s history. A certain Guillaume Belliquet, born in 1767, a Knight of the Legion of Honour. He can be credited for laying the groundwork for a period that would last until 1930. In 1898 under the rule of one of his descendants, Mr. Saint-Brice-Belliquet, Château Jacques Blanc becomes one of the most important producers of the Appellation Saint-Émilion. The famous Guide Ferret writes in its 1898 edition :
“The Domaine of Jacques-Blanc, located between Castillon and Saint-Émilion,
has been completely reconstructed in 1889.
It produces a remarkable wine as far as colour and finesse are concerned”
In 1922 the Guide writes :
“The vineyard is without any doubt one of the largest of the Département de la Gironde…..
it produces a wine that is pleasant, has good aroma and disposes of a great finesse”
However, the crisis that engulfed France during the 1930's brought an end to the reign of the Belliquet family. The Château sees ownership changing hands a few times and during this process the surface area shrinks slowly to 21 hectares.