End of the Isaurian dynasty and accession of Justin

Timeline

1. 518Constantinople · Byzantine EmpireAnastasius I died after a 27-year reign without a clear heir. Though his rule saw fiscal reforms and religious reconciliation, succession disputes in his late years sparked court factional struggles, and the Isaurian faction lost control of the praetorian guard.
2. 518Constantinople · Byzantine EmpirePraetorian prefect Justin was acclaimed emperor with the support of the Senate and army, crowned on August 1. Justin, from a poor Illyrian peasant family, lacked Isaurian background, marking a reorganization of military aristocratic factions.
3. 518–527Constantinople · Byzantine EmpireJustin I adopted his nephew Justinian and gradually entrusted him with major responsibilities, establishing the Justinianic succession line. This laid institutional foundations for Justinian's era of large-scale legislation, construction, and military expansion, formally ending Isaurian dominance at court.