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Origin of the name Justin: From the Latin JustÄ«nus, which is derived from justus (lawful, right, just). From A World of Baby Names by Teresa Norman.
Justinian was an emperor of Byzantine Empire who ruled from 527 ad to 565 ad. He was born in Tauresium (province dardania). His real name was Flavius Petrus Sabbatius Iustinia â¦ nus. He is famous for his legislative activities, primarily for his codification of all the known Roman law called Corpus iuris civilis.