Dionysius of Rome - Against the Sabellians - c. 260 A.D.

Dionysius I of Rome (D.), 3rd c., initially a Roman presbyter, 259/260-267/268, and then successor of Bishop Sixtus II, reorganized the Roman community, which had been greatly weakened by persecution. In 262, as a result of complaints from Alexandrian presbyters about the Origenist type of christology represented by Dionysius of Alexandria, Dionyius of Rome held a synod in Rome that condemned Sabellianism and subordinationism. (Dictionary of Early Christian Literature, p. 183)