39 Craterus: a third century Macedonian, perhaps a member of the royal family, who wrote ψηϕισμάτων Συναγωγή. See Jacoby and Schoch, “Krateros,” No. 1, Pauly-Wissowa-Kroll, vol. 11, coll. 1617ff; Christ-Schmid, op. cit., p. 229f.
Polemon: a late third century polymath and periegete from Ilium. Wrote on many subjects including the antiquities of Athens, Eleusis, Sicyon and Delphi. His nickname, στηλοκόπος, shows an interest in inscriptions. See Christ-Schmid, op. cit., p. 243f; Karl Müller, Fragmenta Historicorum Graecorum, vol. 3, Paris, no date, pp. 108ff.
Diodorus: another third century writer, of unknown origin, who wrote on Athenian antiquities. See E. Schwartz, “Diodoros,” No. 37, Pauly-Wissowa-Kroll, vol. 5, coll. 662ff.
Heliodorus: an Athenian periegete of unknown date who certainly wrote Περὶ Ἀκροπόλεως. The extent and exact nature of his writings are sharply disputed. See esp. Keil, B., “Der Perieget Heliodoros von Athen,” Hermes, 1895, pp. 199–240Google Scholar; Christ-Schmid, op. cit., p. 229, n. 3; F. Jacoby, “Heliodoros,” No. 11, Pauly-Wissowa-Kroll, vol. 8, coll. 15–18.