Justinian I (483-565) was emperor of Byzantium from 527-565. He ordered the construction of the famous Hagia Sophia in Constantinople (now Istanbul) and built or renovated more than thirty other churches in the city. He is also noted from his administrative reorganization, especially his order for the codification of laws that brought together the various writings on Roman law into one work. The Code of Justinian was lost for a number of centuries and was rediscovered toward the end of the eleventh century when it served as a major source for the new compilations of legal texts. Fragmenta Manuscripta 101 contains a part of Justinian's law code or Digest pertaining to boundary disputes. For more on this, see Secular Law.
 Harold J. Berman, Law and Revolution, the Formation of the Western Legal Tradition (Cambridge, Massachusetts: Harvard University Press, 1983), 123; “The Common Law and Civil Law Traditions,” 2, Law.Berkeley.edu. Accessed June 18, 2020, https://www.law.berkeley.edu/wp-content/uploads/2017/11/CommonLawCivilLawTraditions.pdf.