A series which breaks entirely new ground in the study of the history of Wales. The editors commissioned material from some of the most eminent historians working in Welsh history both in and outside Wales. Contributors were asked to draw on their expertise in areas of Welsh historiography which they have made their own, but to approach their themes in a novel way.

The result is a unique blend of secondary and primary source material on the history of Wales. In each volume a series of essays addresses seminal topics. Each essay is cross-referenced in detail to a documentary section which is compiled by the author and forms the source base for the relevant essay. This treatment of each topic is followed by a section in which the evidence is put under scrutiny by an expert outsider who discusses the strengths and weaknesses of the documentary material and the limitations which it has imposed on the author's conclusions and methodology.