Quick Facts
- Born:
- c. 408
- Died:
- 354 bc
Adding us as a Preferred Source tells Google you trust our content, so our articles show up more often in your Google Search, Discover feed, and AI Overviews.
verifiedCite
While every effort has been made to follow citation style rules, there may be some discrepancies.
Please refer to the appropriate style manual or other sources if you have any questions.
Select Citation Style
Dion
ruler of Syracuse
Dion (born c. 408—died 354 bc) was the brother-in-law of Dionysius I, tyrant of Syracuse, in Sicily; Dion was master of Syracuse intermittently between 357 and 354.
When Dionysius II, who was weak and inexperienced, succeeded his father in 367, Dion assumed control and persuaded Plato, whose friendship he had acquired, to train the new tyrant in the practical application of his philosophical principles. The experiment failed and Dion was banished, but in 357, assembling a force of 1,500 mercenaries at Zacynthus, he sailed to Sicily and was received with demonstrations of joy. After a short period of rule he was again banished and again recalled. In 354 he was assassinated. He was included in Plutarch’s Lives.
This article was most recently revised and updated by Encyclopaedia Britannica.
Discover the fascinating events that shaped the world, straight from our editors.
By clicking “Sign Up”, you consent to the Britannica
Privacy Policy
and
Terms of Use.