She was the daughter of Emperor Arcadius. She vowed to remain a virgin for life, and, as a sign of this vow, she had an altar of gold and precious stones built in the cathedral church. She reigned with her brother, Theodosius the Younger. Pulcheria was a great zealot for the Orthodox Faith. At her insistence, the Third Ecumenical Council, which condemned the Nestorian heresy, was convened in Ephesus. She built the famous Church of the Holy Theotokos of Blachernae in Constantinople. Following the death of Theodosius, she married Marcian, the emperor-elect, but lived with him as with a brother. She discovered the relics of the Forty Martyrs of Sebaste. She reposed in the Lord on September 10, 453, at the age of fifty-five.