Columbia subject headings:
Feudalism--Italy.
Italy--History--Germanic rule, 962-1268.
Lunigiana (Italy)--History.
Nobility--Italy--History.
Obertenghi family.
Tuscany (Italy)--History--To 1434.
Harvard subject headings:
Feudalism--Italy.
Italy--History--Germanic rule, 962-1268.
Lunigiana (Italy)--History.
Nobility--Italy--History
Obertenghi family.
Tuscany (Italy)--History--To 1434.
Princeton subject headings:
Feudalism--Italy.
Italy--History--Germanic rule, 962-1268.
Lunigiana (Italy)--History.
Nobility--Italy--History.
Obertenghi family.
Tuscany (Italy)--History--To 1434.