The largest Nonconformist body in Wales, of native growth, and that originated in the middle of the 18th century in connection with a great religious awakening; has an ecclesiastical constitution on Presbyterian lines, and is in alliance with the Presbyterian Church of England; it consists of 1330 churches, and has a membership of over 150,000, that is, on their communion roll, and two theological seminaries, one at Trevecca and one at Bala.