Through the influence of the court official
Chrysaphius, the godson of Eutyches, in 449, Emperor
Theodosius II convened the
Second Council of Ephesus. In remembrance of Cyril's role during the council of 431, the emperor asked Dioscorus to preside over the meetings. The council subsequently decided to reinstate Eutyches and to depose Flavian, as well as
Eusebius of Dorylaeum,
Theoderet of Cyrrus,
Ibas of Edessa, and
Domnus II of Antioch. Leo's legates protested but were ignored. In
The Exile and Death of Flavian of Constantinople: A Prologue to the Council of Chalcedon,
H. Chadwick claims that
Pulcheria and possibly
Anatolius were most likely responsible because she planned "reunion with Rome" and a council that would overturn unfavourable results at the
Second Council of Ephesus. Given they wanted to overturn the results of the council, he notes that
Pope Leo I would never have been willing to recognise
Anatolius as bishop if Flavian were still alive. Given Flavian was being exiled he would be incapable of pursuing their objectives. Chadwick states that: "Nothing could have been easier than to arrange an unfortunate 'accident'. Nothing would have been more convenient to Pulcheria and the patriarch than his removal from the scene." When Flavian is killed and Anatolius comes to power, Chadwick notes a "dramatic decision to throw Dioscorus aside, to reassert the claims of his see to be the second see of Christendom, and to accept, as a necessary bargain, the Tome of Leo." He sees these facts as indicating Flavian's death was ultimately in Pulcheria and Marcian's best interest.
Prosper of Aquitaine, another contemporary, affirms that Flavian was killed by the soldiers taking him to his place of banishment. In a disputed letter to
Theodoret dated 11 June 453, Pope Leo blamed Dioscorus in a general sense for Flavian's death.
Liberatus of Carthage relates that Flavian suffered blows and died as a result. According to
Evagrius Scholasticus,
Eusebius of Dorylaeum complained at the council that Dioscorus himself, along with Barsauma's monks, beat and kicked Flavian.
Theophanes the Confessor, writing three centuries after the event, mentions that Dioscorus personally struck Flavian "both with hands and feet". The detail of Flavian clutching the altar as he was beaten is also a later invention. Theodosius supported the council's decisions until he died on 28 July 450. His sister
Pulcheria returned to power and made the officer
Marcian her consort and emperor. She consulted with Pope Leo on convoking a new council, gathering signatures for his
Tome to be introduced as the basic paper for the new council, but also insisted, against Leo's wishes, that the council should be held not in Italy but in the East. Meanwhile, the new imperial couple brought Flavian's remains back to Constantinople and exiled
Eutyches to Syria. ==Council of Chalcedon==