Saint Athanasia of Aegina (born circa 790 Island of Aegina, Greece - died 14 August 860, Timia , Greece) was a saint who lived in the Byzantine Empire and was for a while adviser to the Empress Theodora II.
Athanasia was the daughter of Christian nobles, Niketas and Irene, and experienced a mystical union of a star merging with her heart while weaving at the loom when she was a young girl. She wanted a spiritual life but an imperial edict required all single women of marriageable age to marry soldiers. At 16 years old, at her parents urging, she complied and married a young officer. Sixteen days after her wedding, her husband was killed in a battle with raiding Arabs. She again married this time to a deeply religious man who felt drawn to become a monk and left with her blessing to do so.
Athanasia then gave away the bulk of her possessions, converted their home into a convent and began building churches. She served as an abbess and was known for her miraculous healing of the sick and those seen as possessed. Her community later moved to Timia near the ancient church of Stephen the Protomartyr. Here crowds flocked to see her. As her fame grew she moved to Constantinople seeking solitude as an Anchoress in a cell for seven years. While walled away, she was an adviser to the Empress Theodora II. After seven years, she returned to Aegina, where she died of natural causes three days later at Timia on 14 August 860.
Her relics are preserved at Timia in a specially made reliquary, and are revered for their reputed healing powers.