A 12th-century earthworks castle, burnt by the Welsh in 1151, was replaced in the next century with a stone fortress, a single tower of which survives along with the foundations of curtain walls.
Cafodd castell gwrthgloddiau o’r 12fed ganrif, a losgwyd gan y Cymry ym 1151, ei ddisodli yn y ganrif nesaf â chaer garreg, ac un o’i thyrrau wedi goroesi hyd heddiw ynghyd â sylfeini murlenni.