In 1631, the Château de Ranton was bought by Paul Aubin, a friend of Richelieu and nephew of the duc de Sully. He also acquired various estates in the area: Bourneuf, La Jaille and others. Throughout this turbulent time, the estates at Ranton were enjoying a new prosperity, and the main buildings around the Cour d’Honneur were re-modeled in the Louis XIII style. Paul Aubin died in 1644. His son, Henri, became Lord of Ranton and, like most of his predecessors, he followed a career in the army. By 1650, he was a major of a Regiment of Dragoons. His wife was no doubt left to look after his daughter and the estates, while he took part in the campaigns against the Huguenots.