Thearides ( grc, Θεαρίδης) was a Syracusan from

Magna Graecia Magna Graecia (, ; , , grc, Μεγάλη Ἑλλάς, ', it, Magna Grecia) was the name given by the Romans to the coastal areas of Southern Italy in the present-day Italian regions of Calabria, Apulia, Basilicata, Campania and Sicily; these re ...

, son of Hermocrates and brother of the Syracusan tyrant Dionysius I of Syracuse. He is first mentioned in 390 BCE, when he was appointed by Dionysius to succeed his brother

Leptines of Syracuse Leptines ( grc-gre, Λεπτίνης; died 375 BC) was a military leader from Syracuse, Sicily, active during his brother, Dionysius the Elder's wars. He showed bravery in the fights against Carthage and mercy with the Thurians. Biography Leptine ...

in the command of the fleet. The next year he commanded an expedition to the

Aeolian Islands The Aeolian Islands ( ; it, Isole Eolie ; scn, Ìsuli Eoli), sometimes referred to as the Lipari Islands or Lipari group ( , ) after their largest island, are a volcanic archipelago in the Tyrrhenian Sea north of Sicily, said to be named after ...

, where he captured ten ships belonging to the Rhegians. Again in 388 BCE he was chosen by his brother to conduct the procession which Dionysius sent to the Olympic festival.

Diodorus Siculus Diodorus Siculus, or Diodorus of Sicily ( grc-gre, Διόδωρος ; 1st century BC), was an ancient Greek historian. He is known for writing the monumental universal history ''Bibliotheca historica'', in forty books, fifteen of which su ...

, ''

Bibliotheca historica ''Bibliotheca historica'' ( grc, Βιβλιοθήκη Ἱστορική, ) is a work of universal history by Diodorus Siculus. It consisted of forty books, which were divided into three sections. The first six books are geographical in theme, ...

'' xiv 102, 103, 109

Notes

4th-century BC Syracusans Ancient Greek admirals {{AncientGreece-bio-stub