Studies of the ecclesiastical reform of the eleventh century have often highlighted conflict between reforming monks and simoniac clerics. This was especially true in the urban contexts of Milan and Florence, cities that played a leading role, at the time, in the history of Italian religious life. Through the presentation of an exemplary case study, this paper shows how around an important Florentine monastery, an episcopal foundation, the conflict between ‘conservatives’ and reformers did not obliterate the genesis and permanence of long-term devotional and cultural traditions. Although these traditions emerged in a context of conflict, they were able to overcome it and develop into a new and enduring form of religiosity that lasted from the Romanesque period to the Early Renaissance.