Ian, Further to Alison's reply, Cwmwysk is frequently referred to in local documents as the farm in the bottom of the valley about 1 mile south west of Trecastle, just below, in a physical sense, the Trecastle to Llanddeusant road. The adjacent (nearby) properties include Ynysfawr and Pwllisaf. May I also add to Alison's query, who are you interested in ? Regards Roger M. Evans