1946 - , Dozent an der Univ. of Durham; Linguist
1949 - , Tätig am Babson College; Babson Park; Mass.; USA; Tätig an der Univ. of Colorado; Boulder; Colo.; Tätig am Dep. of Mathematical Sciences; Univ. of Durham; Durham; UK; Tätig an der Univ. of Hull; Hull
1947 - , Honorary Reader in Ecclesiastical History at the Department of Theology and Religion; Univ. of Durham. Research interests: Early Irish Church; Christianity in Britain; especially Northumbria; to c. 800; Relations between the Britons and Anglo-Saxons in the early middle ages; Early western hagiography