Columbia subject headings:
Mercia (Kingdom)--Church history.
Wessex (Kingdom)--Church history.
Harvard subject headings:
Church history--Middle Ages, 600-1500
Great Britain--Church history--449-1066.
Mercia (England)--Church history.
Wessex (England)--Church history.
Princeton subject headings:
Mercia--Church history.
Wessex (England)--Church history.