Author Eifion Evans is a retired minister of the Presbyterian Church of Wales, living in Carmarthenshire.

      He is the author of a number of books on the subject of revival, including: Revival Comes to Wales: The Story of the 1859 Revival in Wales (1959), The Welsh Revival of 1904 (1969), Revivals: Their Rise, Progress and Achievements (1961), and Two Welsh Revivalists (1985). He lives in Llanelli, Wales, and continues to study and write on the subject of revival.