Donatist theologian. He seems to have been an important layman; he was attacked for his catholicizing views and condemned by a Donatist Council at Carthage c.380, but refused to join the Catholic Church. His chief work was his Liber Regularum, which propounded seven rules for interpreting Scripture. They were incorporated by St Augustine in his De Doctrina Christiana and thus influenced medieval exegesis. His commentary on Rev. no longer exists in its original form, but fragments of an anonymous commentary on Rev. in a Turin MS appear to be directly derived from it.