There are many Arab-derived names in the Val di Mazara (and more Christians converted to Islam from this region),[3] are more mixed in the Val di Noto, while Christian (particularly Greek) identities survived strongest in the Val Demone (with the least Arab-derived names),[4] which was the last to fall to the Muslims, where Christian refugees from other parts of Sicily had assembled, and which furthermore remained in contact with Byzantine southern Italy.[5] Even in 21st century Sicily, differences between the east and west of the island are often explained by locals as being due to the Greek and Arab descent of the populations, respectively.[6] Later Christian Lombard settlements would split the remaining Muslims of Sicily in half, separating the Val di Mazara and the Val di Noto.[7]
Even after Muslim rule, the three valli system was still continued up until 1818, when Sicily was divided into seven provinces.[8] From the 16–17th century, the population of Val di Noto expanded the most slowly of the three valli, with Val di Mazara growing the fastest.[9]
The three valli are represented by the three-legged Trinacria symbol, which appears on the flag of Sicily.[10]
Etymology
Generally, the term val or vallo (plural: valli) can be traced back to Siculo Arabic: وَلاية, romanized: wālāya (based on Arabic: وَلِيّ, romanized: wālī), with the administrative meaning of province.
^Helena Attlee (2014). The Land Where Lemons Grow: The Story of Italy and its Citrus Fruit. Penguin UK. ISBN9780141967868. Catania is a slower-moving, gentler place than Palermo. Most explain the difference between palermitani and catanesi by saying that people on the west of the island are descended from Arabs and those on the east from the Greeks.
^Ann Katherine Isaacs (2007). Immigration and Emigration in Historical Perspective. Edizioni Plus. p. 71. ISBN9788884924988.
^Stephan R. Epstein (13 Nov 2003). An Island for Itself: Economic Development and Social Change in Late Medieval Sicily (revised ed.). Cambridge University Press. p. 68. ISBN9780521525077.
^Dana Facaros; Michael Pauls (2008). Sicily (illustrated ed.). New Holland Publishers. p. 222. ISBN9781860113970.