Columbia subject headings:
Clergy--Family relationships--Byzantine Empire--12th century.
Clergy--Family relationships--England--12th century.
Clergy--Sexual behavior--Byzantine Empire--12th century.
Clergy--Sexual behavior--England--12th century.
Harvard subject headings:
Catholic Church--Clergy--Sexual behavior--England--History--To 1500.
Celibacy--Catholic Church--History--To 1500.
Celibacy--Christianity--History of doctrines--Middle Ages, 600-1500.
Celibacy--Orthodox Eastern Church--History--To 1500.
Church history--12th century.
Orthodox Eastern Church--Clergy--Sexual behavior--History--To 1500.
Princeton subject headings:
Clergy--Family relationships--Byzantine Empire--12th century.
Clergy--Family relationships--England--12th century.
Clergy--Sexual behavior--Byzantine Empire--12th century.
Clergy--Sexual behavior--England--12th century.