The stories say that Euphemia refused to attend a festival in honor of Ares (Mars). She was then taken to a judge named Priscus and was tortured. Some say she was burned at the stake, while tales of a later origin claim she was thrown to wild animals and a bear mauled her to death.
During the Council, the Nicene and Eutychian creeds are said to have been placed in her tomb, which was then sealed. Three days later, it was opened. The Eutychian creed lay at her feet, while she held the Nicene.
Her relics were, according to Latin writers, taken to Rome in 617. Byzantine writers say they were taken to Constantinople in 620. Constantine Copronymus is said to have ordered them thrown into the sea, and Irene rescued them. They are kept at Selymbrin, at the mouth of the Bosphorus.
Karen Rae Keck