Septimius Severus was the fifth and final Emperor of the infamous “Year of the Five Emperors” – and as that suggests, also the most successful. He reigned as the Roman Emperor for eighteen years, and founded a dynasty that would last for another 24 years beyond him.
Aside from Septimius himself, the best known of the Severans is probably Elagabalus (a.k.a. Heliogabalus). The dynasty’s record is mixed: although Septimius Severus successfully restored peace following the civil war of the late 2nd century, the dynasty was disturbed by highly unstable family relationships, and constant political turmoil. It was the last Imperial Roman dynasty of the Principiate (i.e. the Emperorship as founded by Augustus).