CLEARCHUS (b. ca. 390 or 410 b.c.e., the latter date based on Memnon’s report of his age as fifty-eight years at his death in 352), tyrant of Pontic Heracleia (modern Ereğli) in 363-52 b.c.e. As a young man he studied for four years with Isocrates and Plato in Athens (Memnon, in Jacoby, Fragmente III/B, pp. 337-­38, frag. 1; Suda, s.v. “Kléarkhos”). After his return home he became involved in factional struggles and was banished; he then led a band of mercenary troops in the service of the Persian satrap of neighboring Pontic Phrygia, Mithridates (son of Ariobarzanes), with whom he plotted to capture Heracleia in 364. When the oligarchs of Heracleia recalled Clearchus to arbitrate in their conflict with the populace, he betrayed both them and Mithridates, persuading the people to choose him as the true protector of their democracy (Justin, 16.4.10-16). He banished or killed the oli­garchs and seized power in 364-63 b.c.e., ruling for twelve years (Diodorus, 15.81.5) with brutal rigor and ferocity. He was, however, a patron of learning and founded the first public library (Memnon, in Jacoby, Fragmente III/B, pp. 337-38, frag. 1). Clearchus’s rise from leader of mercenary troops to tyrant of a city-state is typical of the unsettled period of the satrapal revolt against Artaxerxes II (ca. 405/4-359/8 b.c.e.) in Asia Minor. He was on friendly terms with the Persian court and sent ambassadors to both Artaxerxes II and Artaxerxes III (359/8-358/7 b.c.e.; Memnon, in Jacoby, Fragmente III/B, pp. 337-38, frag. 1). Obviously under the influence of eastern thought, he claimed divine descent, as a son of Zeus. In the twelfth year of his rule (353-52 b.c.e.) Clearchus fell victim to a conspiracy of aristocrats and was mortally wounded during celebrations of the fes­tival of Dionysus (Memnon, in Jacoby, Fragmente III/B, pp. 337-38, frag. 1; Diodorus, 16.36.3; Justin, 16.5.12-16). Nevertheless, his son Timotheus (r. ca. 352-37), a minor, was named to succeed him, with Clearchus’s brother Satyrus as regent for the first seven years.



P. R. Franke, “Zur Tyrannis des Klearchos und Satyros in Herakleia am Pontos,” Archäologischer Anz., 1966, pp. 130-39.

J. Hofstetter, Die Griechen in Persien. Prosopographie der Griechen im Persischen Reich vor Alexander, Ber­lin, 1978, pp. 104-05 no. 179.

T. Lenschau, “Klearchos 4,” in Pauly-Wissowa, XI/1, cols. 577-­79.

A. T. Olmstead, History of the Persian Empire, Chicago, 1948, pp. 414-15, 429.

(Rüdiger Schmitt)

Originally Published: December 15, 1992

Last Updated: December 15, 1992