Flavius HANNIBALLIANUS Rex
- Constantine I had three sons by Fausta, whom he promoted to the rank of Caesar, Constantine (II) in 317, Constantius (II) in 324 and Constans in 333.
- In 335, he also promoted to Caesar, his nephews, sons of his half-brother Flavius Dalmatius, Delmatius and Hanniballianus.
- Constantine planned one last campaign, the conquest of Persia. Part of this plan was for Hanniballianus to be installed as "King of Armenia and adjacent regions". The title "Rex" was one shunned by Romans since the start of the Republic.
- On Constantine's death on 22nd May 337, the three brothers succeeded him, each with the title Augustus (9th September 337).
- Delmatius and Hanniballianus were two emperors too many and shortly afterwards were murdered.