Non-Fiction
Pendragon: King Arthur and His Britain (Macmillan, 1971)
Other Words: Essays on Poetry and Translation (University of Wales Press, 1999)
Short Stories (as P.G. Thomas)
The Retired Life (Northgate Books, 1997)
Novel (with Gertrude Clancy)
Death is a Pilgrim: A Canterbury Tale (Northgate Books, 1993)
Pendragon: King Arthur and His Britain (Macmillan, 1971)
Other Words: Essays on Poetry and Translation (University of Wales Press, 1999)
Short Stories (as P.G. Thomas)
The Retired Life (Northgate Books, 1997)
Novel (with Gertrude Clancy)
Death is a Pilgrim: A Canterbury Tale (Northgate Books, 1993)
"A seamless collaboration." -- New Welsh review
"The mystery is written as if we were witnessing the actual pilgrimage that inspired Chaucer to compose his Canterbury Tales. The Clancys introduce historical material that fills out the scene, helping one to understand how the pilgrims might have come together....Considerable ingenuity is displayed in weaving narrative threads that connect Chaucer's pilgrims beyond their traveling together on the Canterbury road." -- Ninnau