Columbia subject headings:
Ireland--Church history--600-1500--Congresses.
Ireland--History--To 1172--Congresses.
Transmission of texts--Ireland--History--To 1500--Congresses.
Harvard subject headings:
Europe--Civilization--Irish influences--Congresses.
Ireland--Church history--To 1172--Congresses.
Ireland--Civilization--To 1172--Congresses.
Irish--Europe--History--To 1500--Congresses.
Princeton subject headings:
Europe--Civilization--Irish influences--Congresses.
Ireland--Church history--To 1172--Congresses.
Ireland--Civilization--To 1172--Congresses.
Irish--Europe--History--To 1500--Congresses.