This symbol dates back to when Sicily was part of Magna Graecia. People attribute the origin of the Trinacria, to the triangular form of the island, which consists of three large capes equidistant from each other, pointing in their respective directions, the names of which were Pelorus, Pachynus and Lilybaeum.
While the Greeks called it Triskele, The Celtics called it Triskelion and the Romans Trinacrium, meaning "star with 3 points", other Spiral forms of Trinacria are often classed as solar symbols ; supposedly Pagan. Since earliest ages, the concept of the Great Goddess was a trinity and the model for all subsequent trinities, female, male or mixed. The Goddess Triformis ruled heaven as Virgin, earth as Mother, and the underworld as Crone, or Hel, or Queen of the Shades. This was remembered even in Chaucer’s time, for his Palamon invoked her “Three Forms,” Luna in heaven, Diana on earth, Proserpine in hell.