▁and ▁a ▁" Gre at ▁Hall " ▁inside ▁it . ▁The ▁current ▁high - w alled ▁structure ▁with ▁a ▁complex ▁of ▁rooms ▁and ▁h alls ▁around ▁the ▁circum ference ▁was ▁created ▁in ▁about ▁ 1 2 7 0 ▁by ▁Nicholas ▁de ▁Care w ▁( d . 1 2 9 7 ), ▁concurrent ▁with ▁( and ▁influenced ▁by ) ▁the ▁construction ▁of ▁the ▁Edward ian ▁cast les ▁in ▁North ▁Wales . ▁At ▁this ▁time , ▁the ▁outer ▁w ard ▁was ▁also ▁w alled ▁in . ▁ ▁T ud or ▁period ▁ ▁The ▁de ▁Care ws ▁fell ▁on ▁hard ▁times ▁in ▁the ▁post - Black ▁Death ▁period ▁and ▁mort g aged ▁the ▁castle . ▁It ▁fell ▁into ▁the ▁hands ▁of ▁Rh ys ▁ap ▁Thomas , ▁who ▁made ▁his ▁fortune ▁by ▁strateg ically ▁changing ▁sides ▁and ▁backing ▁Henry ▁T ud or ▁just ▁before ▁the ▁battle ▁of ▁Bos worth . ▁ ▁R ew arded ▁with ▁lands ▁and ▁a ▁kn ighth ood , ▁he ▁extended ▁the ▁castle ▁with ▁lux ur ious ▁apart ments ▁with ▁many ▁T ud or ▁features ▁in ▁the ▁late ▁ 1 5 th ▁century . ▁An ▁inner ▁door way ▁is ▁decor ated ▁with ▁three ▁co ats ▁of ▁arms : ▁those ▁of ▁Henry ▁VII , ▁his ▁son ▁Arthur ▁and ▁Arthur ' s ▁wife ▁Catherine ▁of ▁Arag on . ▁This ▁alleg iance ▁turned ▁s our . ▁Rh ys ' ▁grand son ▁Rh ys ▁ap ▁Gru ff ud d ▁fell ▁out ▁of ▁favour ▁and ▁was ▁executed ▁by ▁Henry ▁VIII ▁for ▁tre ason ▁in ▁ 1 5 3 1