Holy and Great-Martyr Euphemia
The Holy and Great-Martyr Euphemia is commemorated on September 16th, the day on which she suffered. On this day is commemorated the miracle wrought by her precious holy relics, revealed at the time of the Fourth Ecumenical Council in Chalcedon. This Council was called together in the reign of the Emperor Marcian and the Empress Pulcheria, in 451 A.D., after the death of the Emperor Theodosius the Younger, and was summoned because of the heresy