▁The ▁church ▁adopted ▁its ▁naming ▁from ▁the ▁Holy ▁Cross , ▁a ▁re lic ▁of ▁which ▁remained ▁in ▁the ▁incorpor ated ▁Chap el ▁of ▁the ▁Holy ▁Cross ▁and ▁St . ▁Wille had us ▁on ▁the ▁Mount ▁( i . e . ▁hill ; ▁est . ▁ 1 3 th ▁century , ▁abandoned ▁between ▁ 1 5 9 0 ▁and ▁ 1 6 2 9 ) ▁in ▁Al ten wal de . ▁Since ▁ 1 1 8 1 , ▁and ▁on ▁until ▁ 1 6 4 8 , ▁the ▁area ▁formed ▁part ▁of ▁the ▁Prince - Arch bishop ric ▁of ▁Bre men . ▁Ne uen wal de ▁was ▁made ▁a ▁parish ▁of ▁its ▁own ▁and ▁its ▁prec inct ▁was ▁red istrict ed ▁from ▁that ▁of ▁the ▁ ▁in ▁. ▁The ▁convent ▁Church ▁of ▁the ▁Holy ▁Cross ▁thus ▁simultaneously ▁served ▁as ▁parish ▁church ▁for ▁the ▁Ne uen wald ers . ▁ ▁On ▁ 3 0   Nov ember ▁ 1 3 9 0 ▁the ▁convent ▁received ▁a ▁pap al ▁indul gence , ▁pres umably ▁for ▁rep airs ▁to ▁the ▁Holy ▁Cross ▁Church . ▁In ▁ 1 4 0 0 ▁Prince - Arch bishop ▁ ▁granted ▁an ▁indul gence ▁of ▁forty ▁days ▁to ▁all ▁who ▁a ided ▁with ▁new ▁constru ctions ▁with ▁the ▁Holy ▁Cross ▁Church . ▁In ▁ 1 4 2 8 ▁ ▁renew ed ▁the ▁convent ' s ▁privile ge ▁of ▁grant ing ▁indul gen ces ▁both ▁for ▁visit ing ▁the ▁Holy ▁Cross ▁Church ▁on ▁certain ▁fe ast ▁days ▁as ▁well ▁as ▁for ▁material ▁aid