Did Rome Have 2 Emperors?

By Robert Palmer

In ancient Rome, the question of whether the empire had two emperors is a subject of debate among historians. The answer is both yes and no, as the Roman Empire went through different phases with various forms of governance.

The Early Roman Republic

In its early years, Rome was ruled by kings. However, after the overthrow of the last king in 509 BCE, the Roman Republic was established.

The republic was governed by two consuls who were elected annually and held equal power. This system prevented any individual from gaining too much control and becoming a tyrant.

The Roman Empire

Fast forward to 27 BCE when Octavian, later known as Augustus, became the first Roman emperor. This marked the transition from the Roman Republic to the Roman Empire. Augustus held absolute power as the sole ruler of Rome.

The Principate

During what is known as the Principate period (27 BCE – 284 CE), Rome did not have two emperors ruling simultaneously. Instead, there was a single emperor who held supreme authority over the empire. However, this period saw Augustus and subsequent emperors often appointing a co-emperor or an heir apparent.

  • Augustus: Although he had no official co-emperor, Augustus designated his stepson Tiberius as his heir.
  • Nerva-Antonine Dynasty: This dynasty spanned from Nerva to Marcus Aurelius. Several emperors in this dynasty appointed their successors during their reigns.
  • Tetrarchy: In 293 CE, Emperor Diocletian introduced a new form of government called the Tetrarchy or “rule of four.”

    Two senior emperors, called Augusti, ruled the eastern and western halves of the empire. They each appointed a junior emperor, known as Caesars, to assist them and act as their successors.

The Dominate

Following the Tetrarchy, the Roman Empire transitioned into what is known as the Dominate period (284 CE – 476 CE). During this time, Rome had a single emperor ruling over the entire empire. The emperor held absolute power and was supported by a bureaucracy.

Conclusion

In summary, while Rome did not have two emperors ruling simultaneously throughout its history, there were instances of co-emperors or designated successors during certain periods. The Roman Republic had two consuls, but during the Imperial period, Rome generally had one emperor with varying degrees of designated successors or co-emperors.

Understanding the governance structure of ancient Rome is essential for comprehending its rich history and political evolution.