Saint Justinian, 482 or 483 CE – 13 or 14 November 565, was the second member of the Justinian Dynasty (after his uncle, Justin I) and Eastern Roman Emperor from 527 until his death. He is considered a saint amongst Eastern Orthodox Christians, and is also commemorated by the Lutheran Church. One of the most important figures of Late Antiquity, Justinian's rule constitutes a distinct epoch in the history of the Byzantine Empire. The impact of his administration extended far beyond the boundaries of his time and empire. Justinian's reign is marked by the ambitious but ultimately failed renovatio imperii, or "restoration of the empire". This ambition was expressed in the partial recovery of the territories of the Western Roman Empire, including the city of Rome itself. A still more resonant aspect of his legacy was the uniform rewriting of Roman law, the Corpus Juris Civilis, which is still the basis of civil law in many modern states. His reign also marked a blossoming of Byzantine culture, and his building program yielded such masterpieces as the church of Hagia Sophia, which was to be the center of Eastern Orthodox Christianity for many centuries. A devastating outbreak of bubonic plague in the early 540s marked the end of an age of splendor. The empire entered a period of territorial decline not to be reversed until the ninth century.