mudbrick, evidently at the behest of bishop Alexander of Hierapolis. The Passion has been dated to the mid-5th century on the grounds that it describes the construction of such a shrine as if it were a relatively recent occurrence. The original shrine was replaced with a sturdier stone structure in 518; this new site was patronized by important political figures including Roman emperor Justinian I, emperor Khosrow II of the Sassanid Empire, and al-Mundhir III ibn al-Harith, ruler of the Ghassanids. Traditionally, the feast day of Sergius and Bacchus has been celebrated on 7 October in the West. In the Tridentine Calendar they shared the day with Pope Mark and the martyred pair Marcellus and Apuleius. In 1716, this day became the feast of Our Lady of the Rosary, and the commemoration of Sergius, Bacchus and the other saints was moved to 8 October. They were restored to 7 October in 1969. In the Byzantine Empire, they were venerated as protectors of the army. A large monastery church, the Little Hagia Sophia, was dedicated to them in Constantinople by Justinian I, probably in 527. According to legend, during the reign of Justin I, his nephew Justinian had been accused of plotting against the throne and was sentenced to death, which was reversed after Saints Sergius and Bacchus appeared before Justin and vouched for Justinian's innocence. He was freed and restored to his title of Caesar, and in gratitude vowed that he would dedicate a church to the saints once he became emperor. The construction of this Church of Saints Sergius and Bacchus, between 527 and 536 AD (only a short time before the erection of the Hagia Sophia between 532 and 537), was one of the first acts of the reign of Justinian I. Sergius was a very popular saint in Syria and Christian Arabia. The city of Resafa, which became a bishop's see, took the name Sergiopolis and preserved his relics in a fortified basilica. Resafa was improved by Emperor Justinian and became one of the greatest pilgrimage centers in the East. Many other churches were built dedicated in the name of Sergius, sometimes with Bacchus. A church dedicated to Santi Sergio e Bacco was built in Rome in the 9th century. Christian art represents the two saints as soldiers in military garb with branches of palm in their hands. Their feast is observed on 7 October, and a