Life in Antioch
Andronicus is remembered as a goldsmith, or silversmith, who lived and worked in Antioch in the time of the emperor Theodosius the Great (379-395). One account holds that he was an Alexandrian by origin. Both he and his wife Athanasia were devout and gave themselves to a life of charity.
The couple ordered their finances around their faith, dividing what they earned into three parts: one part given to the poor, one part given to the Church, and the remaining part reserved for their own household needs. After the birth of their two children, tradition records that they resolved to live thereafter as brother and sister.
Loss and Renunciation
The couple had two children. According to the tradition, both children died on the same day, plunging Athanasia into deep grief. The synaxarion relates that the martyr Julian appeared to her at the grave and comforted her with the news that the children were in the Kingdom of God.
Following this loss, and, in one account, a vision in church, the couple resolved to renounce the world entirely. Tradition relates that they left the door of their house open as an act of charity. They then traveled to Egypt to take up the monastic life.
Monastic Life in Egypt
In Egypt the couple sought out the renowned elder Daniel of Scetis. Andronicus received the monastic habit under Daniel at Scetis, while Athanasia entered the monastic life apart from him, the sources associating her with a women's monastery at Tabennisi.
The most widely related tradition holds that Athanasia afterward took up the ascetic life dressed in the habit of a man, living as the monk "Athanasius." By this account, after about twelve years, Andronicus encountered the beardless monk "Athanasius" while on his way to pray at the holy places in Jerusalem; the two grew close and eventually settled together in adjacent cells, living in silence without Andronicus recognizing his wife.
Repose
According to the tradition, Athanasia's identity became known only after her death, when a hidden writing revealed that the monk "Athanasius" had in fact been Athanasia, the wife of Andronicus.
Athanasia reposed first, and Andronicus reposed a short time afterward, the sources placing his death about eight days after hers; he was buried near her. They are commemorated together on October 9, and their veneration is shared across the Byzantine and other ancient Christian traditions.