Ceredigion (UK Parliament constituency) towns which comprised the Boroughs varied slightly over this long period, but primarily consisted of Cardigan, Aberystwyth, Lampeter and Adpar, the latter now a suburb of Newcastle Emlyn across the Teifi, in Carmarthenshire. The county constituency (for the purposes of type of returning officer and electoral expenses) was enlarged in 1983 with the addition of part of Pembrokeshire, being renamed Ceredigion and Pembroke North. In 1997 it reverted to its former boundaries, being renamed Ceredigion. The Ceredigion Welsh Assembly constituency was created with the same boundaries in 1999. Since 2017 the seat has been held in Parliament by Ben Lake
Creuddyn, Ceredigion of Deheubarth ruled in medieval Kingdom of Ceredigion, including Creuddyn. Rhys ap Gruffydd's grandson Maelgwn Fychan (d. 1257) battled for control of the area; Gwenllian (d. 1254) died at Llanfihangel-y-Creuddyn. Either Maelgwn or his grandsons Llywelyn or Rhys may have been responsible for building the large 13th century church which still stands today. Creuddyn, Ceredigion Creuddyn was a medieval commote (Welsh: "cwmwd") and, later, a lordship in Ceredigion, Wales. It was located between the rivers Ystwyth and Rheidol, and was one of the three commotes of Cantref Penweddig. The name, of Old Welsh origin, probably refers to the Pen Dinas