Columbia subject headings:
Marriage customs and rites--Italy--Rome--History.
Marriage--Italy--Rome--History.
Nobility--Italy--Rome--History.
Harvard subject headings:
Marriage customs and rites--Italy--Rome--History.
Marriage--Italy--Rome--History.
Nobility--Italy--Rome--History.
Princeton subject headings:
Marriage customs and rites--Italy--Rome--History.
Marriage--Italy--Rome--History.
Rome (Italy)--Social life and customs.