From BiblePortal Wikipedia

Cyclopedia of Biblical, Theological and Ecclesiastical Literature [1]

(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.

The Nuttall Encyclopedia [2]

Emperor of the East from 610 to 642, born in Cappadocia; raised to the throne of the East on account of the services he rendered the citizens of Constantinople in getting rid of a tyrant; waged war against the hostile Persians, defeated Chosroës, and compelled a peace, but was unable to withstand the arms of the Moslem invaders.