1. Dionysius - Noun
2. Dionysius - Proper noun
the tyrant of Syracuse who fought the Carthaginians (430-367 BC)
Source: WordNetI have read somewhere or other, - in Dionysius of Halicarnassus, I think, - that history is philosophy teaching by examples. Henry St John, 1st Viscount Bolingbroke
Lysander, when Dionysius sent him two gowns, and bade him choose which he would carry to his daughter, said, "She can choose best," and so took both away with him. Plutarch
Dionysius the Elder, being asked whether he was at leisure, he replied, "God forbid that it should ever befall me!" Plutarch
All Greek manuscripts of the Corpus Areopagiticum surviving today stem from an early sixth-century manuscript containing John's Scholia and Prologue — so John of Scythopolis had an enormous influence on how Dionysius was read in the Greek-speaking world. Source: Internet
Also, given that the Henoticon was rescinded in 518, if Dionysius was writing after this date, he may have been untroubled by this policy. Source: Internet
Apart from his battle deeds, Dionysius was famous as a patron of art, and Plato himself visited Syracuse several times. Source: Internet