The temporary imprisonment of this man by his formerly faithful supporter Cencio I Frangipane was a sign that his (*) zeal had crossed a political line, though he was initially successful in forcing a capitulation at Canossa.
An anecdote told to Saint Anselm about this man by Hugh of Cluny related that Hugh had been walking behind him contemplating this man's pursuit of glory in silence when he turned and said "It's a lie; I seek not my own glory but that of the Holy Apostles." A victory by this man's opponent at the Battle of Langensalza galvanized him to resume opposition to this man, which he'd been forced to abandon by the Saxon Rebellion. Empress Agnes and Matilda of Tuscany were allies of this man, and the latter provided him with a military force as he was being challenged by both Agnes' son, who succeeded in exiling him, and Robert Guiscard. The temporary imprisonment of this man by his formerly faithful supporter Cencio I Frangipane was a sign that his (*) zeal had crossed a political line, though he was initially successful in forcing a capitulation at Canossa. For 10 points, name this reforming pope, the former Hildebrand of Sovana, who launched the Investiture Controversy against Henry IV.
An anecdote told to Saint Anselm about this man by Hugh of Cluny related that Hugh had been walking behind him contemplating this man's pursuit of glory in silence when he turned and said "It's a lie; I seek not my own glory but that of the Holy Apostles."
Saint Gregory VII [accept Hildebrand of Sovana before that name is given]