**Justinian I**, commonly known as **Justinian the Great** (Latin: **Iustinianus I Magnus**), was Eastern Roman Emperor from 527 to 565.
The sole source for Justinian's full name, **Flavius Petrus Sabbatius Iustinianus** (Justinianus), Greek: **Φλάβιος Πέτρος Σαββάτιος Ἰουστινιανός**, sometimes called **Flavius Anicius Iustinianus** (... Julianus Justinianus), are consular diptychs of the year 521 bearing his name.
