Nonconformity was a major religious movement in Wales from the 18th to the 20th centuries. The Welsh Methodist revival of the 18th century was one of the most significant religious and social movements in the modern history of Wales. The revival began within the Church of England in Wales, partly as a reaction to the neglect generally felt in Wales at the hands of absentee bishops and clergy. For two generations from the 1730s onwards the main Methodist leaders such as Howell Harris, Daniel Rowland and William Williams Pantycelyn remained within the Church of England, but the Welsh revival differed from the Methodist revival in England in that its theology was Calvinist rather than Arminian. Methodists in Wales gradually built up their own networks, structures, and meeting houses (or chape