 His long tenure in this office was rare at the time, but he was skilful and cunning, and was present at all of the negotiations in his time - he was particularly responsible for arranging the marriage of Anne of Brittany to the king, sealing the joining of the Duchy of Brittany to the French kingdom.He was entrusted with preparations for war with Italy and the education of the children of Louis XII and François I.During the 17th and 18th centuries, other leading families - such as the Bourdeilles and the Beauvilliers - lived in the castle.