Columbia subject headings:
Harvard subject headings:
Alexius I Comnenus, Emperor of the East, 1048-1118
Byzantine Empire--History--Alexius I Comnenus, 1081-1118
Emperors--Byzantine Empire--Biography
Princeton subject headings:
Alexius I Comnenus, Emperor of the East, 1048-1118.
Byzantine Empire--History, Military--527-1081.
Byzantine Empire--History--Alexius I Comnenus, 1081-1118.
Byzantine Empire--History--Comneni dynasty, 1081-1185.