Columbia subject headings:
Irish--Germany, Southern--History--To 1500--Congresses.
Monks--Germany, Southern--History--To 1500--Congresses.
Harvard subject headings:
Christianity and other religions--Celtic--Congresses.
Ireland--Church history--Congresses.
Irish--Germany, Southern--History--To 1500--Congresses.
Missionaries--Ireland--History--Congresses.
Monasticism and religious orders--Ireland--Congresses.
Monks--Ireland--Congresses.
Princeton subject headings: