All-powerful between 1481 and 1485, he strove to defend the independence of the duchy against the machinations of the King of France, and attempted to marry Francis' heir Anne of Brittany to the Duke of Orleans.
All-powerful between 1481 and 1485, he strove to defend the independence of the duchy against the machinations of Louis XI, the King of France, engaging in secret negotiations with King Edward IV of England. After the death of Louis, he attempted to marry Francis' heir Anne of Brittany to the Duke of Orleans.