We can thank Sir William ap Thomas, the ‘blue knight of Gwent’, for the moated Great Tower of 1435 that still dominates this mighty fortress-palace.
I Syr William ap Thomas, neu’r ‘marchog glas o Went’, y mae’r diolch am Dŵr Mawr amffosog 1435 sy’n dal i daflu ei gysgod dros y gaer-balas nerthol hon.