Columbia subject headings:
Cities and towns, Medieval--Germany.
Cities and towns, Medieval--Italy.
Nobility--Germany.
Nobility--Italy.
Harvard subject headings:
Cities and towns, Medieval--Germany
Cities and towns, Medieval--Italy
Nobility--Germany
Nobility--Italy
Princeton subject headings:
Cities and towns, Medieval--Germany.
Cities and towns, Medieval--Italy.
Nobility--Germany.
Nobility--Italy.