▁of ▁Cast ell ón ▁de ▁la ▁Pl ana , ▁though ▁the ▁capital ▁of ▁the ▁province ▁of ▁ ▁Cast ell ón , ▁had ▁no ▁epis cop al ▁see : ▁by ▁the ▁Con cord at ▁of ▁ 1 8 5 1 ▁the ▁See ▁of ▁T ort osa , ▁to ▁which ▁dioc ese ▁a ▁large ▁part ▁of ▁the ▁province ▁belonged , ▁was ▁to ▁be ▁transferred ▁to ▁it . ▁ ▁In ▁ 1 9 6 0 ▁the ▁see ▁became ▁the ▁Dioc ese ▁of ▁Seg or be - Cast ell ón . ▁Following ▁the ▁De ▁mut ation e ▁fin ium ▁D io ec es ium ▁Valent inae - Seg orb ic ensis - D ert ot ensis ▁dec ree , ▁of ▁ 3 1 ▁May ▁ 1 9 6 0 , ▁the ▁par ishes ▁belonging ▁to ▁the ▁Province ▁of ▁Val ència ▁were ▁dis member ed ▁and ▁aggreg ated ▁to ▁the ▁Arch di oc ese ▁of ▁Val encia . ▁On ▁the ▁other ▁hand , ▁the ▁N ules , ▁V ila - real , ▁Cast ell ó ▁de ▁la ▁Pl ana , ▁Luc ena ▁and ▁Alb oc à s ser ▁par ishes ▁that ▁had ▁belonged ▁to ▁the ▁Roman ▁Catholic ▁Dioc ese ▁of ▁T ort osa ▁were ▁aggreg ated ▁to ▁the ▁Dioc ese ▁of ▁Seg or be - Cast ell ón ▁along ▁with ▁the ▁parish ▁of ▁Bet x í . ▁Franco ist ▁propag anda ▁presented ▁the ▁changes ▁as ▁an ▁occasion ▁for ▁rejo icing . ▁ ▁B ish ops ▁of ▁Seg or be ▁( 6 th ▁and ▁ 7 th ▁centuries )