1927? – 1977
The church in early Irish society
1966
Celtic Britain in the early Middle Ages
1980
Early Christian Ireland: introduction to the sources
1972
Ireland in early mediaeval Europe
1982
Celtic monasticism
1981
Church and society in Ireland, A.D. 400-1200
1987
The early Celtic idea of history and the modern historian
1977
Early Christian Ireland
1977
Early Christianity in Pictland
1970
Lay presiding
1988
Return to the jungle
1983
The Welsh Latin chronicles
1974
England before the conquest
1971
The modern traveller to the early Irish Church
1977
