Columbia subject headings:
Alessandro Farnese, Duke of Parma, 1545-1592.
Harvard subject headings:
Alessandro Farnese, duke of Parma and Placenza, 1545-1592.
Alessandro Farnese, duke of Parma, 1545-1592.
Princeton subject headings:
Alessandro Farnese, duke of Parma and Placenza, 1545-1592.