An interesting event in 1904-1905. From Wikipedia: > The 1904–1905 Welsh revival was the largest Christian revival in Wales during the 20th century. It was one of the most dramatic in terms of its effect on the population, and triggered revivals in several other countries. The movement kept the churches of Wales filled for many years to come, seats being placed in the aisles in Mount Pleasant Baptist Church in Swansea for twenty years or so, for example. Meanwhile, the Awakening swept the r...