a writer of uncertain date, author of a Chronographia or Chronicon, from which " a passage worthy of note concerning the eruption of Mt. Vesuvius, in the reign of Titus, and the cause of subterraneous fires, according to the opinion of the Christians of that time," &c., is quoted in the of Joannes the patriarch, extant in MS. in the Imperial Library at Vienna. Fabricius notices one or two other persons of the name. (Bibl. Graec. vol. xi. p. 630.)