Originally named Istok which is part of the province of Illyricum .
Istok is the man who would become Justin I was a Thracian or Illyrian peasant from the Latinophone region of Dardania .
Originally named Istok , the man who would become Justin I was a Thracian or Illyrian peasant from the Latinophone region of Dardania , which is part of the province of Illyricum .