The United Church of Canada (French: Église unie du Canada) is a mainline Reformed denomination and the largest Protestant Christian denomination in Canada, and the largest Canadian Christian denomination after the Roman Catholic Church. The United Church was founded in 1925 as a merger of four Protestant denominations with a total combined membership of about 600,000 members: the Methodist Church, Canada, the Congregational Union of Ontario and Quebec, two-thirds of the congregations of the Presbyterian Church in Canada, and the Association of Local Union Churches, a predominantly prairie-based movement. The Canadian Conference of the Evangelical United Brethren Church joined the United Church of Canada on 1 January 1968.