 Besides some works on Latin grammar, mention must be made of his Historia de rebus gestis trium pontificium Leodiensium, a chronicle of the bishops of Liège (published by Jean Chapeauville in 3 volumes, Liège, 1612–16).His liturgical works are the most important and the best of his writings, especially for the history of the Breviary and the Mass.Here he displays a great spirit of piety, showing at the same time much critical ability, learning and wide reading.