Trinacria's both an alternative name for Sicily and a synonym for its national symbol, the triskelion, which also appears on the flag of Sicily. Historically, the name Trinacria was used after the Peace of Caltabellotta (1302) to distinguish between the two Sicilies that became a reality after the War of the Sicilian Vespers. Frederick III of Sicily was recognised as king over Sicily, with the title of "King of Trinacria." Charles of Anjou was recognised as king over the southern portion of the… (More on Trinacria)