Ystrad Peithyll (also known as Stradpeithyll and Rhosgoch Motte) is the remains of a small 12th-century motte-and-bailey castle on the River Peithyll, near Penrhyn-coch in northern Ceredigion, Wales. Built in the wake of the Norman occupation of Wales under Henry I and inhabited by a steward named Razo or Razon, it was attacked and destroyed in the rebellion led by Gruffydd ap Rhys (1113 or 1116).^[2]

• http://en.wikipedia.org/wiki/Ystrad Peithyll