Member of a Roman family of Constantinople. Related to Emperor Theodosius II. Ordained in 455. Composed several hymns, and was known as a miracle worker. One day as he rushed to the consecration of a new church, he encountered a miserable, nearly naked beggar on the street. Marcian gave the man all his clothing, keeping only his chasuble. When he arrived at the church, however, he appeared to be wearing a golden robe under the chasuble; Patriarch Gennadius even rebuked Marcian for dressing so richly. The saint then pulled off the chasuble to show he was naked.