# Constantinian dynasty

Roman imperial dynasties :
Medallion of Constantine I from the Szilágysomlyo Treasure, showing the augustus (C) crowned by the manus Dei, with his eldest son Constantine II crowned by Victory (R) accompanied by the other caesares, Constans and Constantius II (L) :
Constantinian dynasty :
Chronology :
| Constantius I | 305–306 |
| Constantine I | 306–337 |
| Constantine II | 337–340 |
| Constans | 337–350 |
| Constantius II | 337–361 |
| Julian | 361–363 |
Succession :
| Preceded by Tetrarchy | Followed by Jovian and Valentinianic dynasty |
vte :
The Constantinian dynasty is an informal name for the ruling family of the Roman Empire from Constantius Chlorus (died 306) 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 I
** From relationship between Constantius I and Helena
*** Constantine I
**** From marriage between Constantine I and Minervina
***** Crispus
**** From marriage between Constantine I and Fausta
***** Constantina, wife of Hannibalianus and Constantius Gallus
***** Constantine II
***** Constantius II
****** No offspring from marriage between Constantius II and his first wife, daughter of Julius Constantius
****** No offspring from marriage between Constantius II and Eusebia
****** From marriage between Constantius II and Faustina
******* Constantia, wife of Gratian
***** Constans I
***** Helena, wife of Julian
** From marriage between Constantius Chlorus and Theodora
*** Flavius Dalmatius
**** From marriage between Flavius Dalmatius and unknown wife
***** Flavius Dalmatius
***** Hannibalianus, husband of Constantina
*** Julius Constantius
**** From marriage between Julius Constantius and Galla
***** son, died in the purges of 337
***** daughter, first wife of Constantius II
***** Constantius Gallus
****** No offspring from marriage between Gallus and Constantina
**** From marriage between Julius Constantius and Basilina
***** Julian
****** 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
***** Licinius II
*** Eutropia
***** Nepotianus

## Family tree

vteCONSTANTINIAN DYNASTY detailed family tree :
| | | | | | | | | | | | | | | | | | | | | | | | | Afranius Hannibalianus | Afranius Hannibalianus | Afranius Hannibalianus | Afranius Hannibalianus | Afranius Hannibalianus | Afranius Hannibalianus | Eutropia | Eutropia | Eutropia | Eutropia | Eutropia | Eutropia | Maximian Western emperor | Maximian Western emperor | Maximian Western emperor | Maximian Western emperor | Maximian Western emperor | Maximian Western emperor |
| | | | | | | | | | | | | | | | | | | | | | | | | Theodora | Theodora | Theodora | Theodora | Theodora | Theodora | | | | | | | | | | | | | Constantius I Chlorus Western emperor 250-305-306 | Constantius I Chlorus Western emperor 250-305-306 | Constantius I Chlorus Western emperor 250-305-306 | Constantius I Chlorus Western emperor 250-305-306 | Constantius I Chlorus Western emperor 250-305-306 | Constantius I Chlorus Western emperor 250-305-306 | | | | | | | Helena 250–330 | Helena 250–330 | Helena 250–330 | Helena 250–330 | Helena 250–330 | Helena 250–330 | Maxentius Western emperor | Maxentius Western emperor | Maxentius Western emperor | Maxentius Western emperor | Maxentius Western emperor | Maxentius Western emperor |
| Constantia 293–330 ∞ Licinius 250-308-324-325 | Constantia 293–330 ∞ Licinius 250-308-324-325 | Constantia 293–330 ∞ Licinius 250-308-324-325 | Constantia 293–330 ∞ Licinius 250-308-324-325 | Constantia 293–330 ∞ Licinius 250-308-324-325 | Constantia 293–330 ∞ Licinius 250-308-324-325 | Flavius Dalmatius censor | Flavius Dalmatius censor | Flavius Dalmatius censor | Flavius Dalmatius censor | Flavius Dalmatius censor | Flavius Dalmatius censor | 1.Galla | 1.Galla | 1.Galla | 1.Galla | 1.Galla | 1.Galla | Julius Constantius d. 337 ∞ 2.Basilina | Julius Constantius d. 337 ∞ 2.Basilina | Julius Constantius d. 337 ∞ 2.Basilina | Julius Constantius d. 337 ∞ 2.Basilina | Julius Constantius d. 337 ∞ 2.Basilina | Julius Constantius d. 337 ∞ 2.Basilina | Anastasia | Anastasia | Anastasia | Anastasia | Anastasia | Anastasia | Eutropia | Eutropia | Eutropia | Eutropia | Eutropia | Eutropia | Fausta 289–326 | Fausta 289–326 | Fausta 289–326 | Fausta 289–326 | Fausta 289–326 | Fausta 289–326 | | | | | | | Constantine I the Great 272-306-337 | Constantine I the Great 272-306-337 | Constantine I the Great 272-306-337 | Constantine I the Great 272-306-337 | Constantine I the Great 272-306-337 | Constantine I the Great 272-306-337 | | | | | | | Minervina | Minervina | Minervina | Minervina | Minervina | Minervina |
| Dalmatius caesar | Dalmatius caesar | Dalmatius caesar | Dalmatius caesar | Dalmatius caesar | Dalmatius caesar | Hannibalianus | Hannibalianus | Hannibalianus | Hannibalianus | Hannibalianus | Hannibalianus | (1) Constantius Gallus | (1) Constantius Gallus | (1) Constantius Gallus | (1) Constantius Gallus | (1) Constantius Gallus | (1) Constantius Gallus | (2) Julian 331-360-363 | (2) Julian 331-360-363 | (2) Julian 331-360-363 | (2) Julian 331-360-363 | (2) Julian 331-360-363 | (2) Julian 331-360-363 | Helena d. 360 | Helena d. 360 | Helena d. 360 | Helena d. 360 | Helena d. 360 | Helena d. 360 | Constantina ∞ 1.Hannibalianus 2.Constantius Gallus | Constantina ∞ 1.Hannibalianus 2.Constantius Gallus | Constantina ∞ 1.Hannibalianus 2.Constantius Gallus | Constantina ∞ 1.Hannibalianus 2.Constantius Gallus | Constantina ∞ 1.Hannibalianus 2.Constantius Gallus | Constantina ∞ 1.Hannibalianus 2.Constantius Gallus | Constantius II 317-337-361 ∞ Faustina | Constantius II 317-337-361 ∞ Faustina | Constantius II 317-337-361 ∞ Faustina | Constantius II 317-337-361 ∞ Faustina | Constantius II 317-337-361 ∞ Faustina | Constantius II 317-337-361 ∞ Faustina | Constantine II Western emperor 316-337-340 | Constantine II Western emperor 316-337-340 | Constantine II Western emperor 316-337-340 | Constantine II Western emperor 316-337-340 | Constantine II Western emperor 316-337-340 | Constantine II Western emperor 316-337-340 | Constans I Western emperor 320-337-350 | Constans I Western emperor 320-337-350 | Constans I Western emperor 320-337-350 | Constans I Western emperor 320-337-350 | Constans I Western emperor 320-337-350 | Constans I Western emperor 320-337-350 | (daughter) ∞ Justus | (daughter) ∞ Justus | (daughter) ∞ Justus | (daughter) ∞ Justus | (daughter) ∞ Justus | (daughter) ∞ Justus | Crispus d. 326 | Crispus d. 326 | Crispus d. 326 | Crispus d. 326 | Crispus d. 326 | Crispus d. 326 |
| Jovian 331-363-364 | Jovian 331-363-364 | Jovian 331-363-364 | Jovian 331-363-364 | Jovian 331-363-364 | Jovian 331-363-364 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Marina Severa | Marina Severa | Marina Severa | Marina Severa | Marina Severa | Marina Severa | Valentinian I Western emperor VALENTINIANIC DYNASTY | Valentinian I Western emperor VALENTINIANIC DYNASTY | Valentinian I Western emperor VALENTINIANIC DYNASTY | Valentinian I Western emperor VALENTINIANIC DYNASTY | Valentinian I Western emperor VALENTINIANIC DYNASTY | Valentinian I Western emperor VALENTINIANIC DYNASTY | Justina | Justina | Justina | Justina | Justina | Justina |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Constantia 361–383 | Constantia 361–383 | Constantia 361–383 | Constantia 361–383 | Constantia 361–383 | Constantia 361–383 | Gratian Western emperor 359-367-383 | Gratian Western emperor 359-367-383 | Gratian Western emperor 359-367-383 | Gratian Western emperor 359-367-383 | Gratian Western emperor 359-367-383 | Gratian Western emperor 359-367-383 | Galla | Galla | Galla | Galla | Galla | Galla | Theodosius I Eastern emperor THEODOSIAN DYNASTY | Theodosius I Eastern emperor THEODOSIAN DYNASTY | Theodosius I Eastern emperor THEODOSIAN DYNASTY | Theodosius I Eastern emperor THEODOSIAN DYNASTY | Theodosius I Eastern emperor THEODOSIAN DYNASTY | Theodosius I Eastern emperor THEODOSIAN DYNASTY |
Family of Constantinian dynasty :
| | | | | | | | | Maximian286–305adoptive father | Maximian286–305adoptive father | Maximian286–305adoptive father | Maximian286–305adoptive father | Maximian286–305adoptive father | Maximian286–305adoptive father |
| Helena | Helena | Helena | Helena | Helena | Helena | | | Constantius Chlorus305–306 | Constantius Chlorus305–306 | Constantius Chlorus305–306 | Constantius Chlorus305–306 | Constantius Chlorus305–306 | Constantius Chlorus305–306 | | | | | | | | | | | | | | | | | Flavia Maximiana Theodora | Flavia Maximiana Theodora | Flavia Maximiana Theodora | Flavia Maximiana Theodora | Flavia Maximiana Theodora | Flavia Maximiana Theodora |
| | | | | Constantine I306–337 | Constantine I306–337 | Constantine I306–337 | Constantine I306–337 | Constantine I306–337 | Constantine I306–337 | | | Flavius Dalmatius | Flavius Dalmatius | Flavius Dalmatius | Flavius Dalmatius | Flavius Dalmatius | Flavius Dalmatius | Hannibalianus | Hannibalianus | Hannibalianus | Hannibalianus | Hannibalianus | Hannibalianus | Flavia Julia Constantia | Flavia Julia Constantia | Flavia Julia Constantia | Flavia Julia Constantia | Flavia Julia Constantia | Flavia Julia Constantia | | | Licinius308–324 | Licinius308–324 | Licinius308–324 | Licinius308–324 | Licinius308–324 | Licinius308–324 | Anastasia | Anastasia | Anastasia | Anastasia | Anastasia | Anastasia | | | Bassianus | Bassianus | Bassianus | Bassianus | Bassianus | Bassianus |
| | | | Galla | | Julius Constantius | | Basilina | | Licinius II | | Eutropia | | Virius Nepotianus |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Hannibalianus | Hannibalianus | Hannibalianus | Hannibalianus | | | Constantina | Constantina | Constantina | Constantina | Constantina | Constantina | Constantius Gallus | Constantius Gallus | Constantius Gallus | Constantius Gallus | Constantius Gallus | Constantius Gallus | Julian360–363 | Julian360–363 | Julian360–363 | Julian360–363 | Julian360–363 | Julian360–363 | Helena | Helena | Helena | Helena | Helena | Helena | Nepotianus | Nepotianus | Nepotianus | Nepotianus | Nepotianus | Nepotianus |
| Minervina | Minervina | | | Constantine I306–337 | Constantine I306–337 | Constantine I306–337 | Constantine I306–337 | | | Fausta | Fausta | Fausta | Fausta |
| Crispus | Crispus | Crispus | Crispus | Crispus | Crispus | Constantine II337–340 | Constantine II337–340 | Constantine II337–340 | Constantine II337–340 | Constantine II337–340 | Constantine II337–340 | Constans337–350 | Constans337–350 | Constans337–350 | Constans337–350 | Constans337–350 | Constans337–350 | Hannibalianus | Hannibalianus | Hannibalianus | Hannibalianus | Hannibalianus | Hannibalianus | Constantina | Constantina | Constantina | Constantina | Constantina | Constantina | Constantius Gallus | Constantius Gallus | Constantius Gallus | Constantius Gallus | Constantius Gallus | Constantius Gallus |
| | | | | | | | | | | | | | | | | | | | | | | | | Faustina | Faustina | Faustina | Faustina | Faustina | Faustina | Constantius II337–361 | Constantius II337–361 | Constantius II337–361 | Constantius II337–361 | Constantius II337–361 | Constantius II337–361 | Helena | Helena | Helena | Helena | Helena | Helena | Julian360–363 | Julian360–363 | Julian360–363 | Julian360–363 | Julian360–363 | Julian360–363 |
| | | | | | | | | | | | | Gratian367–383 | Gratian367–383 | Gratian367–383 | Gratian367–383 | Gratian367–383 | Gratian367–383 | Constantia | Constantia | Constantia | Constantia | Constantia | Constantia |

## 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

## Eastern Roman dynasties that linked themselves to Constantinians

* Valentinians (through marriage)
* Theodosians (through marriage)
* Palaiologos
* Komnenos
* Doukas
* Phokas