He also did this to advance a centralized federal form of government, but in so doing preserved the nature of the Brittany's autonomy by acknowledging its nobles' traditional privileges, and acted as the Duke of Brittany.
Ta tegi seda ka valitsuse tsentraliseeritud föderaalse vormi edendamiseks, kuid nii tehes säilitas Bretagne'i autonoomia olemuse, tunnistades selle aadli traditsioonilisi privileege; nii tehes toimis kuningas Bretagne'i hertsogina.