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.