Question: Who was the "king's engineer" to the  King of Portugal, Naples, Sicily and Sardinia and Duke of Milan?
Sentence (from "Duke of Carcaci"): The first Duke of Carcaci was Don Vincenzo Paternò Castello (1681–1767) who in 1725 was created a duke of the Kingdom of Naples by Charles VI, Holy Roman Emperor and King of Naples, who had gained control of the Kingdom of Naples in 1714 and of Sicily in 1720.
Relevant evidence: No