", ▁and ▁the ▁care ▁by ▁I rene ▁in ▁between , ▁and ▁other ▁details ▁that ▁remained ▁part ▁of ▁the ▁story . ▁ ▁According ▁to ▁Sebastian ' s ▁ 1 8 th - century ▁entry ▁in ▁Act a ▁San ctor um , ▁still ▁attributed ▁to ▁Am bro se ▁by ▁the ▁ 1 7 th - century ▁h agi ograph er ▁Jean ▁Bol land , ▁and ▁the ▁br ie fer ▁account ▁in ▁the ▁ 1 4 th - century ▁Leg enda ▁A ure a , ▁he ▁was ▁a ▁man ▁of ▁Gall ia ▁Nar bon ensis ▁who ▁was ▁taught ▁in ▁Medi olan um ▁( Mil an ). ▁In ▁ 2 8 3 , ▁Sebastian ▁entered ▁the ▁army ▁in ▁Rome ▁under ▁Emperor ▁Car inus ▁to ▁assist ▁the ▁mart y rs . ▁Because ▁of ▁his ▁courage ▁he ▁became ▁one ▁of ▁the ▁capt ains ▁of ▁the ▁Pra et or ian ▁Gu ards ▁under ▁Dioc let ian ▁and ▁Maxim ian , ▁who ▁were ▁una ware ▁that ▁he ▁was ▁a ▁Christian . ▁ ▁According ▁to ▁tradition , ▁Marcus ▁and ▁Marcel li an ▁were ▁tw in ▁brothers ▁from ▁a ▁distinguished ▁family ▁and ▁were ▁de a cons . ▁Both ▁brothers ▁married , ▁and ▁they ▁res ided ▁in ▁Rome ▁with ▁their ▁w ives ▁and ▁children . ▁The ▁brothers ▁refused ▁to ▁sacrifice ▁to ▁the ▁Roman ▁gods ▁and ▁were ▁arrested . ▁They ▁were ▁visited ▁by ▁their ▁parents ▁T ran qu ill inus ▁and ▁Mart ia ▁in ▁prison , ▁who ▁attempted ▁to ▁persu ade ▁them ▁to ▁ren ounce ▁Christian ity . ▁Sebastian ▁succeeded ▁in ▁converting ▁T ran qu