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.
Girolamo Sartorio Girolamo Sartonio, also known as Hieronimo Sartorio and Geronimo Sartorio (died April 1707 in Venice), was an innovative Italian architect and engineer who worked mainly the German cities of Hanover, Hamburg, Leipzig and Erfurt. His designs were based on Palladian architecture. He was a noted expert in the installation of stage equipment and theatrical machinery and also worked as a builder or consulting architect on the construction of various opera houses, such as the Oper am Gänsemarkt in Hamburg. He is also credited with the beginnings of opera in Leipzig and the construction of the opera house in Prague.