Hie eh er astyrt, marish y choyrle choontae, er 1 Averil 1996 liorish y Local Government (Wales) Act 1994. Ren shen aachroo ny shenn choonteeyn: Cardiganshire (ghow eshyn yn ennym noa Ceredigion ersyn hene cho leah as nod eh), Sir Gaerfyrddin as Sir Benfro.