The priest Caudron, was an iconic vine growing figure in Passy Grigny, a Marne Valley's village. He loved eating in the village vine grower's homes. Vine growers of Passy-Grigny lived off the sales of their grapes without reaping their rewards so Dom Caudron gave them the idea of joining forces in 1929: "Let's combine our skills!". The vineyard originally covered 12 hectares. It now covers more than 130 hectares on the Marne Valley's hillsides. More than 60 vine growers have since joined the movement.