(Ἐλπίδιος), is called a remarkable nan and fond of learning. Leontius, in his commentary on the " Phaenomena" of Aratus, says, that he had constructed for Elpidius a sphaera according to the description of Aratus, and Fabricius (Bibl. Gr. iv. p. 94, note) supposes that this Elpidius is the same as the patrician who was sent as ambassador to Chaganus, king of the Avari, in the first year of the reign of the emperor Mauritius, and who is mentioned by Cedrenus and other writers of that period.
[L.S]A Dictionary of Greek and Roman biography and mythology
Smith, William
A Dictionary of Greek and Roman biography and mythology. William Smith, LLD, ed. 1890