There was a fortified chateau at Ranton more than a thousand years ago.
Traces still remain in the Merovingian columns in the tunnels off the moat.
He was Procurator to the French king in the Duchy of Touraine, then Prevost of Paris from 1339 to 1349 . The main towers and the ramparts that are still the remarkable feature of the Chateau were built. The Chapel would have been within this outer wall and was on the site of the present church. Guillaume's daughter, Jeanne, married Jean de la Jaille in 1345 and the Chateau was part of her dowry. It was associated with the de la Jaille family until 1570 .