Novatian served as a presbyter in Rome under Bishop Fabian who was martyred in January 250, in the Decian persecution. In 251, Novatian was named bishop of Rome himself by those who opposed the election of Cornelius, Novatus of Carthage being one of them.
The career of Novatianus is described in the letter from Bishop Cornelius of Rome to Bishop Fabius of Antioch, see [1396].
More on Novatus of Carthage can be found in the letter from Bishop Cyprian of Carthage to Bishop Cornelius of Rome, see [1275].