He first detected, zealously confuted, and condemned the errors
and impostures of the Cataphryges or Montanists with their false
prophecies, as Eusebius mentions. To this triumph over heresy and
imposture he added the crown of martyrdom, which he received in the
persecution of Severus, about the year 204. See Eusebius, b. 5, c.
16, and the ancient martyrologies.