Dr Geraint Tudur was a lecturer in church history at Bangor University and is general secretary of the General Union of Welsh Independents.

In nine neatly-organized and compelling chapters . . . the author reveals how this compulsive diarist became the self-styled commander-in-chief of the Methodist movement only to find himself by 1750 consigned to the wilderness by colleagues who had become exasperated by his heretical views and his eye for the opposite sex . . . Geraint Tudur is a balanced and fair-minded chronicler, and his portrait of Harris, warts and all, deserves a wide readership. It also whets the appetite for a sequel.