Dion
Δίων
(Δίων).
1. Of Alexandria, an Academic philosopher and a friend of Antiochus. He was sent by his fellow-citizens as ambassador to Rome, to complain of the conduct of their king, Ptolemy Auletes. On his arrival at Rome he was poisoned by the king's secret agents, and the strongest suspicion of the murder fell upon M. Caelius. (Cic. Ac. 4.4, pro Cael. 10, 21; Strab. xvii. p.796.)
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.