In 1922, Théophile Marcelou planted the first vines of what was to become Château Roc de Calon. Today, his great-grandson Thomas Laydis, succeeding his parents Bernard and Sylvie, represents the fourth generation at the head of this estate, whose wines are of consistently acclaimed quality. This Montagne Saint-Emilion vineyard extends over 21 hectares on the south-western face of the Calon hillock.