Dionysius
1 of 2biographical name (1)
Di·o·ny·sius ˌdī-ə-ˈni-shē-əs 
-sē-əs,
-shəs;
-ˈnī-sē-əs
circa 430–367 b.c. the Elder Greek tyrant of Syracuse (405–367)
Dionysius
2 of 2biographical name (2)
the Younger tyrant of Syracuse (367–356; 346–343 b.c.)