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.
Giovanni da Verrazzano Giovanni da Verrazzano (] , sometimes also incorrectly spelled Verrazano) (1485–1528) was an Italian explorer of North America, in the service of King Francis I of France.