Martyrdom and Relics
By the account of his encomiast, Marcian was put to death by members of the Jewish community of Syracuse, who are said to have felt threatened by the bishop's persuasive preaching. He is therefore honored as a martyr-bishop, a hieromartyr.
His relics were later removed from Sicily and brought to the Italian city of Gaeta, where they are kept in the Cathedral of Saints Erasmus and Marcianus, in an underground crypt; portions of his relics are also said to remain at Syracuse and Messina. One tradition relates that the relics were secretly transferred to Gaeta at the time of the Saracen invasions of Sicily.