PONTIANUS: Pope probably from July 21, 230, to Sept. 28, 235. During his pontificate the circular letter of Demetrius, bishop of Alexandria, condemning Origen, was approved by a synod at Rome (see ORIGEN; and ORIGENISTIC CONTROVERSIES). Pontianus, together with the antipope Hippolytus, was exiled to Sardinia under the persecution of Maximinus Thrax, where he resigned.