▁was ▁then ▁granted ▁to ▁Robert ▁Fitz hard ing , ▁a ▁wealth y ▁burg ess ▁of ▁Br istol ▁and ▁supp orter ▁of ▁the ▁Plant agen ets . ▁He ▁was ▁the ▁founder ▁of ▁the ▁Ber keley ▁family ▁which ▁still ▁holds ▁the ▁castle . ▁ ▁In ▁ 1 1 5 3 – 5 4 , ▁Fitz hard ing ▁received ▁a ▁royal ▁char ter ▁from ▁King   Hen ry   II ▁giving ▁him ▁permission ▁to ▁re build ▁the ▁castle . ▁Fitz hard ing ▁built ▁the ▁circular ▁shell ▁keep ▁between ▁ 1 1 5 3 ▁and ▁ 1 1 5 6 , ▁probably ▁on ▁the ▁site ▁of ▁the ▁former ▁mot te . ▁The ▁building ▁of ▁the ▁cur tain ▁wall ▁followed , ▁probably ▁during ▁ 1 1 6 0 – 9 0 ▁by ▁Robert ▁and ▁then ▁by ▁his ▁son ▁Maurice . ▁ ▁Much ▁of ▁the ▁rest ▁of ▁the ▁castle ▁is ▁ 1 4 th   century ▁and ▁was ▁built ▁for ▁Thomas ▁de ▁Ber keley , ▁ 3 rd ▁Baron ▁Ber keley : ▁Thor pe ' s ▁Tower , ▁to ▁the ▁north ▁of ▁the ▁keep , ▁the ▁inner ▁gate house ▁to ▁its ▁south west , ▁and ▁other ▁buildings ▁of ▁the ▁inner ▁ba iley . ▁ ▁Mur der ▁of ▁Edward ▁II ▁ ▁The ▁castle ▁was ▁r ans ack ed ▁in ▁ 1 3 2 6 ▁by ▁the ▁forces ▁of ▁Hugh ▁Desp enser , ▁the ▁favour ite ▁of ▁Edward ▁II . ▁Then ▁in ▁ 1 3 2 7 , ▁Edward ▁was ▁de posed ▁by ▁his ▁wife ▁Queen ▁Isabel la ▁and ▁her ▁al