The Greek text of the
Oratio is preserved in a single manuscript tradition, of which the
Vorlage was
Codex Argentoratensis gr. 9, kept in the municipal library of
Strasbourg. This copy, dated to the thirteenth or fourteenth century, was lacunose and corrupt. It was destroyed in a fire during the
siege of Strasbourg on 24 August 1870, but not before it was copied twice: around 1580 in the
Codex Tubingensis M. b. 27 and in 1586 by
Henri Estienne for the
first edition he was preparing (published 1592). It has since been published several times, by
Friedrich Sylburg (1593),
Prudentius Maran (1742), Carl von Otto (1879) and
Adolf von Harnack (1896). At an early stage, a Greek
bouleutes (senator) named Ambrose produced an excerpted, expanded and vulgarized version of the Greek text under the title Ύπομνήματα (
Hypomnemata). This version of the
Oratio, which does not survive, was at some point translated into
Syriac. This version survives in a single manuscript of the seventh century,
Codex Nitriacus,
Mus. Brit. Add. 14658. ==Author and date==