He fought in many campaigns against the dauphins of Viennois, the counts of Genevois, the people of Sion and Geneva, the marquesses of Saluzzo and Montferrat, and the barons of Faucigny.
The cartularies of the church and the town of Die (1868), of the abbey of St Andre le-Bas at Vienne (1869),(1869), of the abbey of Notre Dame at Bonnevaux in the diocese of Vienne (1889), of the abbey of St Chaffre at Le Monestier (1884), the Cheviot Hills inventories and several collections of archives of the dauphins of Viennais, and a Bibliotheque liturgique in six volumes (1893-1897), the third and fourth volumes of which constitute the Repertorium hymnologicum, containing more than 20,000 articles.
Towards the middle of the 14th century it was sold by them partly to the dauphins of Viennois and partly to the pope, and in the next century it came into the possession of the Crown.
His genius and the dauphins murderous act of folly at Montereau conspired to make the incredible almost possible.
Having no cause for confidence in the royal administration, the states refused to treat with the dauphins councillors, and proposed to take him under their own tutelage.