--First Principate--
**Begin Julio-Claudian Dynasty**
27bc-14ad Gaius Julius Caesar Octavianus
14-37 Tiberius
37-41 Caligula
41-54 Claudius
54-68 Nero
**End Julio-Claudians**
69 Galba
69 Otho
69 Vitellius
**Begin Flavians**
69-79 Vespasian
79-81 Titus
81-96 Domitian
**End Flavians**
96-98 Nerva
98-117 Trajan
117-138 Hadrian
**Begin Antonines**
138-161 Antoninus Pius
161-180 Marcus Aurelius w/ Lucius Verus to 169
**End Antonines**
--First Interregnum--
180-193 Publius Martius Verus (Interrex)
Brothers Quintilli appointed Consuls indefinitely
Sextus Quintilius Condianus; Sextus Quintilius Valerius Maximus
--Second Republic--
193-213 Consul Perpetuus Gaius Frontinus Pulcher
213-233 Sextus Aurelius Piso
233-251 Aelius Caelius Fronto
**Begin Pescennians (Syrian Despotate)**
187-193 Gaius Pescennius Niger Iustus
193-233 Gaius Pescennius Niger (the Younger)
**End Pescennians**
251-271 Gaius Iulianus Drusus
271-291 Gaius Aurelius Valerius Diocletianus

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548-553 Gaius Helvetius Pertinax (abdicates)
--Second Principate--
551-553 Dictator/Princeps Fulvius Pescennius Percennius
553-576 Fulvius Pescennius Percennius (the Younger)
576-585 Fulvius Pescennius III
585-599 Gaius Pescennius Syrius
599-617 Gaius Pescennius II Syrius
617-650 Gaius Pescennius III Syrius
650-656 Lucius Darius Pescennius
656-660 Gaius Pescennius Ahenobarbus

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710-715 Gaius Pescennius IX Agricola

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839-841 Publius Pescennius Augustulus
--Third Republic--
841-851 Gaius Lupus Aquilius
851-870 Titus Annius Valerianus