Euthydemus
4. A man of Sicyon, who made himself tyrant of the city, together with Timocleidas. On their deposition, according to Pausanias, the supreme power was committed to Cleinias, the father of Aratus. [CLEINIAS, No. 4.]
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.