Pentre Dwr (or Pentre-dwr) is a village in the City and County of Swansea, Wales falling within the Bon-y-maen ward. The village approximates to the settlement west of Winch Wen and south of Trallwn along Crymlyn Road. Glamorgan or Glamorganshire (Welsh: Morgannwg or Welsh: Sir Forgannwg) is one of the thirteen historic counties and a former administrative county of Wales. It was originally an early medieval kingdom of varying boundaries known as Glywysing until taken over by the Normans as a lordship.