Hugh of Châteauneuf was a Benedictine monk and the Bishop of Grenoble, serving from 1080 until his death in 1132. Born in Châteauneuf-sur-Isère, he was chosen to reform his diocese following the Council of Avignon. He was ordained by Pope Gregory VII and spent his episcopate addressing ecclesiastical abuses and navigating territorial disputes with Count Guigues III. Beyond his administrative duties, he was a writer and played a significant role in the establishment of the Carthusian Order.