From the 15th century on, Sicily was reigned by the so-called vice kings. Between 1412 and 1515, Adrano was under administration by the Moncada family. Giovan Tommaso Moncada (1466–1501) renovated the Norman castle and fortified it. He allowed a couple of refugees from the northern Greek region of Epirus to settle down in the vicinity of Adrano, which is how the town of Biancavilla was founded. The relatives of earl Moncada build many manors (so-called "palazzi") in the centre of the town, among which is the latter town hall, and the centre of the city, the "piazza", became popular meeting place for the residents, who meanwhile numbered around 6,000. Around the same time began the construction of the Monastero di Santa Lucia (Monastery of St Lucy). In 1693, a severe earthquake inflicted heavy damage to the town.