In the early summer, the Emperors of East and West issued a joint summons to the bishops of Christendom to assemble in Council at Ephesus, and Leo's letters indicate a feverish activity. His chief work was to write a long dogmatic letter[62] on the nature of Christ--a very able theological essay--to be read by his Legates at the Council. Dioscorus of Alexandria presided over this imposing assembly of 360 bishops and representative clergy, in the presence of two imperial commissioners, the Papal Legates, and the patriarchs of Antioch and Jerusalem, yet it has passed into Western ecclesiastical history under the opprobrious title, given to it by Leo,[63] of "The Robbers' Meeting." It is quite true that the sittings dissolved in brawls, and monks and soldiers brandished their ominous weapons over the heads of the bishops, but that was not unprecedented. The main fact was that Dioscorus contemptuously refused to hear the Roman Legates, as Leo says, and induced the Council to restore Eutyches and depose Flavian. Deacon Hilary, one of the Legates, fled in terror of his life, and unfolded these enormities to Leo, whose correspondence now became intense and indignant. For a few months, Leo made strenuous efforts to redeem the prestige of his See. We know, since 1882, that Flavian in turn appealed to Rome, but Leo needed no new incentive. He wrote repeatedly to the pious Pulcheria, to Theodosius, to his "vicar" in Thessalonica, and to the monks, priests, and people of Constantinople. He knew the situation well. Alexandria had defied Constantinople, but the case of Constantinople was weakened by the division of court-factions and the monkish support of Eutyches. It seemed an admirable occasion for Rome to adjudicate, and Leo pressed Theodosius and Pulcheria[64] to summon an Ecumenical Council at Rome. In the thick of the struggle (February, 450), Valentinian III. visited Rome with the court, and Leo, with tears in his eyes, besought the Empress Galla Placidia to work for the Roman Council. Galla Placidia knew no more than the monks about theology, and was more concerned about her wayward daughter Honoria, but she urged Pulcheria to ensure the holding of the Council at Rome. Presently there came from Constantinople the news that Theodosius was dead, Pulcheria was mistress of the court, the eunuch-godfather had been executed, the monk exiled, and the Archbishop Flavian restored to his See.