Isili

Isili passed into the Catalan-Aragonese Kingdom of Sardinia in 1324 and developed within the island's system of feudal villages. The Carroz and successive noble families held rights over the settlement, with the Tellez Giron among its later lords. Eighteenth-century community councils provided an early form of municipal representation within this framework.

Education and religious patronage added another local institution. The Piarists began working at Isili in 1661, opening a free school and undertaking charitable activities. Their church, built between 1661 and 1737, was originally dedicated to Saint Efisio before receiving the name of the order's founder, Joseph Calasanz. Its construction combined a central plan with side chapels and Gothic-Catalan elements. On 8 December 1821 Isili became a provincial capital, bringing an administrative role extending across the surrounding inland communities. Feudal authority, schooling and provincial government left distinct layers in the settlement's early modern history.