▁location ▁and ▁present ▁condition ▁are ▁unknown . ▁ ▁E cc les iast ical ▁history ▁ ▁Gr at ian opol is ▁was ▁important ▁enough ▁in ▁the ▁Roman ▁province ▁of ▁Ma ure t ania ▁Ca es ari ensis ▁to ▁become ▁one ▁of ▁the ▁suff rag ans ▁of ▁its ▁Metropolitan ▁Arch bishop ▁in ▁the ▁pap al ▁s way . ▁ ▁Its ▁only ▁historical ▁recorded ▁b ish ops ▁attended ▁ 5 th - century ▁church ▁coun c ils : ▁▁ ▁Public ius ▁( C atholic ) ▁and ▁De uter ius ▁( Don at ist ▁her etic ), ▁both ▁at ▁the ▁Conference ▁of ▁Car th age ▁( 4 1 1 ) ▁ ▁Th al ass ius , ▁present ▁at ▁the ▁Syn od ▁of ▁Car th age ▁( 4 8 4 ) ▁called ▁by ▁king ▁Hun er ic ▁of ▁the ▁V andal ▁Kingdom ▁and ▁afterwards ▁ban ished ▁like ▁most ▁Catholic ▁participants . ▁ ▁The ▁see ▁was ▁to ▁fade ▁like ▁most ▁( pla us ibly ▁at ▁the ▁ 7 th ▁century ▁advent ▁of ▁Islam ), ▁and ▁apparently ▁does ▁not ▁figure ▁in ▁a ▁list ▁of ▁the ▁bishop rics ▁of ▁the ▁province ▁preserved ▁in ▁a ▁document ▁of ▁the ▁sixth ▁and ▁sevent h ▁centuries , ▁unless ▁it ▁be ▁dis gu ised ▁under ▁another ▁native ▁name ▁( see ▁By z antin ische ▁Zeitschrift , ▁ 1 8 9 2 , ▁II , ▁ 2 6 , ▁ 3 1 ). ▁ ▁Tit ular ▁see ▁ ▁No ▁later ▁than ▁ 1 6 5 2 , ▁the ▁dioc ese ▁has ▁been ▁nomin ally ▁restored ▁as ▁a