Nicetas, known only from Latin sources who call him papa Nicetas, is said to have been the Bogomil bishop of Constantinople. In the 1160s he went to Lombardy. His purpose was apparently to reinforce the dualist beliefs of the Cathars of these regions, and, in particular, to throw doubt on the validity of their spiritual lineage or ordo, the sequence of consolamenta by which they were linked to the Apostles.