Theodosian dynasty

Roman imperial dynasties
Theodosian dynasty
379–457
Missorium of Theodosius with three Theodosian emperors
Western and Eastern Roman Empires 395
StatusImperial dynasty
CapitalRome
Constantinople
Ravenna
GovernmentAbsolute monarchy
Western Roman emperor 
 394–395
Theodosius I
 395–423
Honorius
 421
Constantius III
 425–455
Valentinian III
Eastern Roman emperor 
 379–395
Theodosius I
 395–408
Arcadius
 408–450
Theodosius II
 450–457
Marcian
Historical eraLate antiquity
 Battle of Adrianople, Death of Valens (378), Ascent of Theodosius I
379
 Death of Marcian
457
Preceded by
Succeeded by
Valentinianic dynasty (364–455)
Leonid dynasty (457–518)

The Theodosian dynasty was a Roman imperial family that produced five Roman emperors during Late Antiquity, reigning over the Roman Empire from 379 to 457. The dynasty's patriarch was Theodosius the Elder, whose son Theodosius the Great was made Roman emperor in 379. Theodosius's two sons both became emperors, while his daughter married Constantius III, producing a daughter that became an empress and a son also became emperor. The dynasty of Theodosius married into, and reigned concurrently with, the ruling Valentinianic dynasty (r.364–455), and was succeeded by the Leonid dynasty (r.457–518) with the accession of Leo the Great.