Septimius Severus (/səˈvɪərəs/; Latin: Lucius Septimius Severus Augustus; 11 April 145 – 4 February 211), also known as Severus, was Roman emperor from 193 to 211. Severus was born in Leptis Magna in the Roman province of Africa. As a young man he advanced through the cursus honorum—the customary succession of offices—under the reigns of Marcus Aurelius and Commodus. Severus seized power after the death of Emperor Pertinax in 193 during the Year of the Five Emperors.
After deposing and killing the incumbent emperor Didius Julianus, Severus fought his rival claimants, the generals Pescennius Niger and Clodius Albinus. Niger was defeated in 194 at the Battle of Issus in Cilicia. Later that year Severus waged a short punitive campaign beyond the eastern frontier, annexing the Kingdom of Osroene as a new province. Severus defeated Albinus three years later at the Battle of Lugdunum in Gaul.
After consolidating his rule over the western provinces, Severus waged another brief, more successful war in the east against the Parthian Empire, sacking their capital Ctesiphon in 197 and expanding the eastern frontier to the Tigris. Furthermore, he enlarged and fortified the Limes Arabicus in Arabia Petraea. In 202, he campaigned in Africa and Mauretania against the Garamantes; capturing their capital Garama and expanding the Limes Tripolitanus along the southern frontier of the empire.
The Severan dynasty was a Roman imperial dynasty, which ruled the Roman Empire between 193 and 235. The dynasty was founded by the Roman general Septimius Severus, who rose to power as the victor of the 193-197 civil war.
Although Septimius Severus successfully restored peace following the upheaval of the late 2nd century, the dynasty was disturbed by highly unstable family relationships, and constant political turmoil, foreshadowing the imminent Crisis of the Third Century. It was the last lineage of the Principate founded by Augustus.
Lucius Septimius Severus was born to a family of Phoenician equestrian rank in Leptis Magna,the Roman province of Africa proconsularis, in modern day Libya. He rose through military service to consular rank under the later Antonines. Proclaimed emperor in 193 by his legionaries in Noricum during the political unrest that followed the death of Commodus, he secured sole rule over the empire in 197 after defeating his last rival, Clodius Albinus, at the Battle of Lugdunum.