 In 1823 the chapel was rebuilt, and the success of the chapel by the nineteenth century is shown by a religious survey of 1851.The parish of Llanwenllwyfo (now part of Llaneilian Community) was recorded as having 583 residents.The census lists two churches, of which the Anglican parish church recorded an attendance of 51, while Nebo chapel recorded the morning service of 328, afternoon 327, evening 615, indicating that the chapel was drawing in adherents from outside the parish, at a time when the Amlwch copper mining and related industries were employing large numbers of workers.