Heraclius (Eraclius or Eradius), bishop elect of Hippo, was designed by Augustine, September 26, 426, to become his successor, but owing to some irregularity he was never inaugurated into that office, and the fall of Hippo into the hands of the Vandals abolished the see. There are attributed to Heraclius two sermons found among those of St. Augustine. See Hoefer, Nouv. Biog. Generale, s.v.; Smith, Dict. of Christ. Biog. s.v.