 Glaber's writings often sympathized with proponents of church reform of that age, including Henry II, Henry III, and Robert II of France, while criticizing others like Conrad II, and Pope Benedict IX.As a source of events, the work is of limited value due to its chronological and geographic inadequacy, but it is significant as a cultural history document for morality and customs of the 11th century.He also wrote a hagiography of William of Volpiano, the "Vita Sancti Guillelmi Abbatis Divionensis."