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| 0145 | Birth |  |
| Lepcis Magna Birth of Septimus Severus , son of Publius Septimus Geta & Fluvia Pia |
| 0169 | Quaestor Rome Septimus Severus |  |
| Appointed Quaestor of Rome |
| Rome Appointed Quaestor of Rome |
| 0177 | Praetor Septimus Severus |  |
| Appointed Praetor |
| Rome Appointed Praetor |
| 0180 | Legate |  |
| Appointed Legate to Syria, 180-182 |
| 0184 | Governor |  |
| Gallia Appointed Governor of Gallia Lugdunnensis |
| 0191 | Governor |  |
| Pannonia Appointed Governor of Pannonia |
| 0193 | Assassination |  |
| Pertinax is assassinated by the Pretorian Guard |
| Rome Pertinax is assassinated by the Pretorian Guard |
| Septimus, Albinus & Pescennus Niger emerge as rival successors |
| Rome Septimus, Albinus & Pescennus Niger emerge as rival successors |
| 0193 | Battle of Cyzicus |  |
| Cyzicus Septimus crushes Asellius Aemilianus , supporter of Niger, in a battle for Rome |
| 0193 | Severan Dynasty |  |
| Founds the Severan Dynasty |
| Rome Founds the Severan Dynasty |
| 0193 | Siege of Rome |  |
| Rome Accepts the Salutatio & his hailed by his troops, then marches on Rome |
| Rome Marches on Rome |
| Rome Rome ceases to be a military city |
| Rome Surrounds the Pretorian Guard by the Illyrian cavalry & strips them of arms & honors |
| 0193 | Succession |  |
| Succeeds as Emperor of Rome |
| Rome Succeeds as Emperor of Rome |
| 0194 | Battle of Issus |  |
| Issus Crushes Niger, Governor of Syria, who claims to be Emperor |
| 0196 | Battle of Lyon |  |
| 19th Feb Lyon Crushes Albinus , Governor of Britain, who claims to be Emperor |
| 0197 | Invasion of Parthia |  |
| Parthia Invades Parthia because of its support for Niger as Emperor |
| 0199 | Capture |  |
| Mesopotamia Captures Mesopotamia |
| Ctesiphon Captures the Parthia capital |
| 0199 | Rule of Mesopotamia |  |
| Mesopotamia Mesopotamia becomes a Roman province |
| 0208 | Invasion of Britain |  |
| Oversees the re-capture of Scotland after the wall of Antonius had been overcome |
| Rome Oversees the re-capture of Scotland after the wall of Antonius had been overcome |
| 0209 | Capture |  |
| Concludes treaties with local Scottish tribes & becomes the "conqueror of Britain" |
| 0209 | Rule of Britain |  |
| Concludes treaties with local Scottish tribes & becomes the "conqueror of Britain" |
| 0210 | Peace |  |
| Having lost many troops the Romans make peace with the Scots |
| 0211 | Death |  |
| 4th Feb York Dies at Eboracum, York, during his invasion of Britain |