This book investigates the complex and transformative history of the Church in Wales from the early 17th century through to its disestablishment in the early 20th century. Glanmor Williams, a distinguished historian of Wales, draws upon extensive archival research and secondary sources to chart the religious, social, and political currents that shaped the Welsh Church over three centuries. The work presents a detailed examination of the Church's internal struggles, its relationship with the state, and its eventual separation from the Church of England.

This comprehensive study by Glanmor Williams is recognized as a significant contribution to the understanding of Welsh ecclesiastical history. It is valued for its detailed scholarship and its thorough analysis of the period leading up to and including the disestablishment of the Church in Wales. The book provides essential context for students and scholars of British religious and political history.