Columbia subject headings:
Harvard subject headings:
Italy, Southern--History.
Sicily (Italy)--History--1194-1282
Princeton subject headings:
Italy, Southern--Church history.
Italy, Southern--History--Sources.
Italy, Southern--History.
Italy, Southern--Politics and government.
Normans--Italy, Southern--History.
Normans--Italy--Sicily--History.
Sicily (Italy)--Church history.
Sicily (Italy)--History--Sources.
Sicily (Italy)--History.
Sicily (Italy)--Politics and government.