Sozomen (died c. 450), in his "Ecclesiastical History", gives essentially the same version as Socrates. He also adds that it was said (by whom he does not say) that the location of the Sepulchre was "disclosed by a Hebrew who dwelt in the East, and who derived his information from some documents which had come to him by paternal inheritance" (although Sozomen himself disputes this account) and that a dead person was also revived by the touch of the Cross. Later popular versions of this story state that the Jew who assisted Helena was named Jude or Judas, but later converted to Christianity and took the name Kyriakos. Theodoret (died c. 457) in his "Ecclesiastical History" Chapter xvii gives what would become the standard version of the finding of the True Cross: With the Cross were also found the Holy Nails, which Helena took with her back to Constantinople. According to Theodoret, "She had part of the cross of our Saviour conveyed to the palace. The rest was enclosed in a covering of silver, and committed to the care of the bishop of the city, whom she exhorted to preserve it carefully, in order that it might be transmitted uninjured to posterity." Another popular ancient version from the Syriac tradition replaced Helena with a fictitious first-century empress named Protonike, who is said to be the wife of emperor Claudius. This story, which originated in Edessa in the 430s, was transmitted in the so-called "Doctrina Addai", which was believed to be written by Thaddeus of Edessa (Addai in Syriac texts), one of the seventy disciples. The narrative retrojected the Helena version to the first century. In the story, Protonike traveled to Jerusalem after she met Simon Peter in Rome. She was shown around the city by James, the brother of Jesus, until she discovered the cross after it healed her daughter of some illness. She then converted to Christianity and had a church built on Golgotha. Aside from the Syriac tradition, the Protonike version was also cited by Armenian sources. According to the 1955 Roman Catholic Marian Missal, Helena went to Jerusalem to search for the True Cross and found it September 14, 320. In the eighth century, the feast of the Finding was transferred to May 3, and September 14 became the celebration of the "Exaltation of the Cross", the commemoration of a victory over the Persians by Heraclius, as a result of which the relic was returned to Jerusalem.