Who was the "king's engineer" to the  King of Portugal, Naples, Sicily and Sardinia and Duke of Milan?
Tibúrcio Spannocchi Tiburzio Spannocchi (1541–1609) (also Spanucchi, Spanochi, Spanoqui, Hispanochi etc.) was "king's engineer" to Philip II of Spain and subsequently to Philip III of Spain. He was named "Chief Engineer" in 1601.
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.