Who was the "king's engineer" to the  King of Portugal, Naples, Sicily and Sardinia and Duke of Milan?
Philip III of Spain Philip III (Spanish: "Felipe" ; 14 April 1578 – 31 March 1621) was King of Spain. He was also, as Philip II, King of Portugal, Naples, Sicily and Sardinia and Duke of Milan.
Marquess of Saint Philip Marquess of Saint Philip, also spelled as Marquis of Saint Philip or St. Philip (in Spanish: "Marqués de San Felipe"; in Italian: "Marchese di San Filippo") is a title granted in 1709 by Philip V, king of Spain and, at that time, claimant king of Sardinia, to the Sardinian nobleman and politician Vicente Bacallar. It has passed afterwards to the house Amat.