During his reign he was a generous patron of monasteries and he expanded his territory by diplomacy rather than war. He founded the collegiate church Saint-AndréofGrenoble, which is today the last existing monument built by the delphinal dynasty, and where he and some of his successors were buried.[2]
In 1228, Guigues was supporting Turin in their attempts to trade without paying heavy duties to Thomas, Count of Savoy. This was despite the treaty that had been made between the families when Guigues's sister, Marguerite married the count's son and heir.[3]
Bouchard, Constance Brittain (1987). Sword, Miter, and Cloister: Nobility and the Church in Burgundy, 980–1198. Cornell University Press.
Cox, Eugene L (1974). The Eagles of Savoy. Princeton, NJ.: Princeton University Press. ISBN0691052166.
Lemonde, Anne (2002). Le temps des libertés en Dauphiné l'intégration d'une principauté à la couronne de France, 1349-1408 (in French). Presses universitaires de Grenoble.
Moreau, Gilles-Marie (2010). Le Saint-Denis des Dauphins : histoire de la collégiale Saint-André de Grenoble. Paris: L'Harmattan.