," ▁to ▁which ▁Pope ▁Leo ▁III ▁( 7 9 5 ‑ 8 1 6 ) ▁gave ▁g ifts ▁( LP ▁ 9 8 . 2 4 , ▁ 9 8 . 7 8 ), ▁and ▁the ▁" mon aster y ▁of ▁Christ ’ s ▁holy ▁mart y rs ▁Ser g ius ▁and ▁Bac chus ▁called ▁Call in icum " ▁to ▁which ▁Pope ▁Bened ict ▁III ▁( 8 5 5 ‑ 8 5 8 ) ▁gave ▁silver ▁g ifts ▁including ▁two ▁ch al ices , ▁a ▁pat en ▁and ▁inc ense ▁boat ▁( LP ▁ 1 0 6 . 2 6 ). ▁Call in icum ▁is ▁a ▁city ▁in ▁Sy ria . ▁The ▁nin th ▁century ▁monaster y ▁was ▁under ▁the ▁authority ▁of ▁St . ▁Paul ' s ▁Out side ▁the ▁W alls . ▁ ▁In ▁the ▁ele vent h ▁century ▁the ▁monaster y ▁was ▁populated ▁by ▁Bened ict ine ▁mon ks , ▁known ▁in ▁the ▁Catalogue ▁of ▁Tur in ▁as ▁the ▁" Ch urch ▁of ▁St . ▁Ser g ius ▁in ▁Sub ur ra ." ▁Sub ur ra ▁is ▁an ▁ancient ▁and ▁modern ▁name ▁of ▁the ▁neighborhood . ▁ ▁A ▁b ull ▁of ▁ 1 0 4 5 ▁of ▁Pope ▁Gregory ▁VI ▁( 1 0 4 5 - 6 ) ▁put ▁under ▁the ▁authority ▁of ▁the ▁monaster y ▁of ▁St . ▁Peter ▁of ▁Per ug ia ▁" the ▁monaster y ▁of ▁St . ▁Ser g ius , ▁which ▁is ▁called ▁Can el icum , ▁situated ▁in ▁the ▁fourth ▁region ▁of ▁Rome ▁in ▁the