Constantinian dynasty

Roman imperial dynasties
Constantinian dynasty
Chronology
Constantine I as Caesar		307–311
-with Maximinus II as Caesar		307–311
-with Galerius and Severus as Augusti		307–308
-with Galerius and Licinius as Augusti		308–311
-with Maxentius as usurper in Rome (and Asia Minor 311–312)		308–312
Constantine I as Caesar (self proclaimed Augustus)		311–312
-with Maximinus II and Licinius as Augusti of East and West		311–312
Constantine I as Augustus of the West		312–324
Licinius as Augustus of the East		312–324
-with Constantine II, Crispus and Licinianus as Caesares		317–324
Constantine I as sole Emperor		324–337
Constantine II as Augustus of Gaul, Britannia and Hispania		337–340
Constans as Augustus of Italy and Africa (and Gaul, Britannia and Hispania 340–350)		337–350
Constantius II as Augustus of Asia and Egypt		337–350
Constantius II as sole Emperor		350–361
Succession
Preceded by Tetrarchy		Followed by Jovian and Valentinian dynasty

The Constantinian dynasty is an informal name for the ruling family of the Roman Empire from Constantius Chlorus (†305) to the death of Julian in 363. It is named after its most famous member, Constantine the Great who became the sole ruler of the empire in 324. The dynasty is also called Neo-Flavian because every Constantinian emperor bore the name Flavius, similarly to the rulers of the first Flavian dynasty in the 1st century.

Stemmata

In italics the Augusti and the Augustae.

• Constantius Chlorus
  1. From relationship between Constantius Chlorus and Helena
     • Constantine I
       1. From marriage between Constantine I and Minervina
          • Crispus
       2. From marriage between Constantine I and Fausta
          • Constantina, wife of Hannibalianus and Constantius Gallus
          • Constantine II
          • Constantius II
            1. No offspring from marriage between Constantius II and his first wife, daughter of Julius Constantius
            2. No offspring from marriage between Constantius II and Eusebia
            3. From marriage between Constantius II and Faustina
               • Flavia Maxima Faustina Constantia, wife of Gratian
          • Constans I
          • Helena, wife of Julian
  2. From marriage between Constantius Chlorus and Theodora
     • Flavius Dalmatius
       1. From marriage between Flavius Dalmatius and unknown wife
          • Flavius Dalmatius
          • Hannibalianus, husband of Constantina
     • Julius Constantius
       1. From marriage between Julius Constantius and Galla
          • son, died in the purges of 337
          • daughter, first wife of Constantius II
          • Constantius Gallus
            1. No offspring from marriage between Gallus and Constantina
       2. From marriage between Julius Constantius and Basilina
          • Julian
            1. No offspring from marriage between Julian and Helena, daughter of Constantine I
     • Hannibalianus (must have died before the imperial purges that occurred in 337 because he is not listed among its victims);
     • Anastasia;
     • Flavia Julia Constantia, wife of Licinius
       1. • Valerius Licinianus Licinius
     • Eutropia
       1. From marriage between Eutropia and Virius Nepotianus
          • Nepotianus

Relationship to other tetrarchs

Other rulers of the tetrarchy were related to the Constantinian dynasty:

• Maximian: adoptive father and stepfather-in-law of Constantius Chlorus, father-in-law of Constantine, stepgrandfather-in-law of Licinius
• Maxentius: adoptive brother and half-brother-in-law of Constantius Chlorus, brother-in-law of Constantine
• Licinius: son-in-law of Constantius Chlorus, half-brother-in-law of Constantine

References

• R. Scott Moore, "The Stemmata of the Neo-Flavian Emperors", DIR (1998)
• R. Scott Moore, "The Stemmata of the Emperors of the Tetrarchy", DIR (1998)