Themison
2. A tyrant of Eretria who in B. C. 366 assisted the exiles of Oropus in recovering possession of their native city. They succeeded in occupying it by surprise, but the Athenians having marched against them with their whole force, Themison was unable to cope with their power, and called in the Thebans to his assistance, who received possession of the city as a deposit, but afterwards refused to give it up. (Diod. 15.76; Xen. Hell. 7.4.1; Dem. de Cor. p. 259.)
From William Smith (ed.), Dictionary of Greek and Roman Biography and Mythology. Text provided under a CC BY-SA license by Perseus Digital Library, http://www.perseus.tufts.edu, with funding from the National Endowment for the Humanities and Tufts University. Data accessed from https://github.com/PerseusDL/canonical-pdlrefwk/ on 17 October 2026.