The Harrowing of Gwynedd continues the story of the earlier days of the Kingdom of Gwynedd begun in the preceding Legends of Camber of Culdi trilogy. Two additional novels, King Javan's Year (1992) and The Bastard Prince (1994), tell of events immediately after the present novel ends.

These three books make up the Heirs of Saint Camber trilogy.

Kurtz has also written two trilogies about the same kingdom many generations later, dealing with events during the reign of King Kelson Haldane.

These books are linked closely to the Camber titles not only through common thematic concerns but also through the cult of Saint Camber and the mysteries about him, which play an important part in the plots of the latter-era novels.

In addition, two supplemental Deryni volumes have been published. The Deryni Archives (1986) is a collection of short stories that explores turning points in the lives of some...