'A cryptic entry', as Malcolm Heath (see below) puts it. The Olympianus referred to here is indeterminable; there is a sophist Olympianus attested in Libanius (Epistles 1489); also an author quoted in Stephanus of Byzantium s.vv. *dou/lwn po/lis, *tahnoi\, in the latter as the writer of a book entitled *)arabika\, Arabian Stories (although there are ms variations on the name: see Heath 133 n.19).
Apart from these, we also know of a bishop of Byzantium (187-198) by that name, another Olympianus as the addressee of a letter by Gregory of Nazianzus (Epistles 234); and the name is also attested in epigraphic sources. Finally, there is an Armenian collection of fables under Olympianus' name, probably a compilation of Aesopic fables.