Though there has been a castle here since at least the early 12th century, the remains that stand today date from the late 13th and early 14th centuries.
Er bu yma gastell ers dechrau’r 12fed ganrif o leiaf, mae’r olion sydd yno heddiw’n dyddio o ddiwedd y 13eg ganrif a dechrau’r 14eg ganrif.