sentences:  Since 1840 the title "Dean" has been appended to that of Precentor, hence the deans of St Davids are formally the "Dean and Precentor" and their seat being on what is normally regarded in most places the "cantoris" side, with a stall "in quire" reserved for the bishop.Gerald of Wales (Giraldus Cambrensis) in the 13th century relates the strange story of a marble footbridge leading from the church over the Alun rivulet in St Davids.The marble stone was called ""Llechllafar"" ("the talking stone") because it once spoke when a corpse was carried over it to the cemetery for interment.