sentences:  The cathedral suffered the pains of disestablishment in 1923, as did the whole Church in Wales.The diocese was made smaller by the removal of the Archdeaconry of Brecon to form the new Diocese of Swansea and Brecon.However, this left a large area as a diocese to govern and St Davids began to deteriorate as the centre of the diocese, being nowhere near the centre – the bishop’s residence had been at Carmarthen since the 16th century, but administration and the focus moved from the cathedral to the diocese's now largest town.