in the process.
Imperial Roman and Byzantine period
.Though declining slowly by the years, Syracuse maintained the status of capital of the Roman government of Sicily and seat of the praetor. It remained an important port for trade between the Eastern and the Western parts of the Empire. Christianity spread in the city through the efforts of Paul of Tarsus and Saint Marziano, the first bishop of the city, who made it one of the main centres of proselytism in the West. In the age of persecutions massive catacombs were carved, whose size is second only to those of Rome.
After a period of Vandal rule, Syracuse and the island was recovered by Belisarius for the Byzantine Empire (31 December 535). From 663 to 668 Syracuse was the seat of Emperor Constans II, as well as metropolis of the whole Sicilian Church.
The city was besieged by the Aghlabids for almost a year in 827–828, but Byzantine reinforcements prevented its fall. It remained the center of Byzantine resistance to the gradual Muslim conquest of Sicily until it fell to the Aghlabids after another siege on 20/21 May 878. During the two centuries of Muslim rule, the capital of the Emirate of Sicily was moved from Syracuse to Palermo. The Cathedral was converted into a mosque and the quarter on the Ortygia island was gradually rebuilt along Islamic styles. The city, nevertheless, maintained important trade relationships, and housed a relatively flourishing cultural and artistic life: several Arab poets, including Ibn Hamdis, the most important Sicilian poet of the 12th century, flourished in the city.
In 1038, the Byzantine general George Maniakes reconquered the city, sending the relics of St. Lucy to Constantinople. The eponymous castle on the cape of Ortygia bears his name, although it was built under the Hohenstaufen rule. In 1085 the Normans entered Syracuse, one of the last Arab strongholds, after a summer-long siege by Roger I of Sicily and his son Jordan of
