St Hugh was a Carthusian Monk.
At the Council of Avignon in 1080, he was elected bishop of Grenoble, though he was not yet ordained. The see of Grenoble had fallen into a very poor state, and Hugh was selected to be its Gregorian renovator. Conducted by a papal legate to Rome, Hugh was ordained by Pope Gregory VII himself. Upon his return, he immediately set to the task of reforming the abuses in his new diocese.
For the rest of the eleventh century, his episcopate was marked by strife with Guigues III of Albon over the possession of ecclesiastic lands in the Grésivaudan. Hugh alleged that the count of Albon had usurped the lands from the bishopric of Grenoble with the help of Bishop Mallen. To reinforce what he judged to be his right, Hugh fabricated a story of the Bishop Isarn reconquering by arms the diocese of Grenoble from the hands of the Saracens. That was the object of the preamble to a series of documents designed to establish the right of the diocese over those lands, documents known as the "Cartularies of Saint Hugh." An accord was finally reached between Hugh and Guigues only in 1099. Guigues agreed to cede the disputed territories while Hugh admitted to the count's temporal authority within the vicinity of Grenoble.
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