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.
Milan I of Serbia Milan Obrenović (; 22 August 1854 – 11 February 1901), was the ruler of Serbia from 1868 to 1889, first as prince (1868-1882), subsequently as king (1882-1889).