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.
Galeazzo Maria Sforza Galeazzo Maria Sforza (24 January 1444 – assassinated, 26 December 1476) was the fifth Duke of Milan from 1466 until his death. He was famous for being lustful, cruel and tyrannical.