Gaius or Lucius Fulvius Plautianus was a member of the Roman gens Fulvia. Plautianus was originally from Leptis Magna, southeast of Carthage. He was a maternal cousin and long-time friend of the Emperor Septimius Severus. Plautianus' father was another Gaius Fulvius Plautianus, born c. 130, whose sister, Fulvia Pia, was married to Severus' father Publius Septimius Geta. Plautianus was Praefectus vigilum from 193 to 197. Plautianus was appointedprefect of the Praetorian Guard in 197. Due to their friendship, Severus rewarded Plautianus with various honors, including a consular insignia, a seat in the Roman Senate and the Consulship of 203. During his consulship, Plautianus' image was minted on coins along with Severus' second son Publius Septimius Geta. He assisted Severus in administering the empire and became very wealthy and powerful. Severus made him his second in command. In 202, Plautianus married his daughter Publia Fulvia Plautilla to Caracalla in Rome. Plautianus began to conduct himself like a ruthless ruler, having those who opposed him assassinated or executed at will. Plautianus became so powerful that Caracalla and his mother, Julia Domna, began to be concerned. Aware of her reservations, Plautianus sought to disrepute Julia. He had her servants and friends arrested and tortured in hopes of extracting some damaging testimony against her, however in doing so he achieved nothing. The marriage between Caracalla and Publia Fulvia Plautilla was not a happy one. In fact, Caracalla loathed both her and her father, threatening to kill them after becoming sole emperor. When Plautianus discovered this, he plotted to overthrow Severus' family. When Plautianus' treachery was discovered, the imperial family summoned him to the palace and ordered his death on 22 January 205. After his death, Plautianus’ property was confiscated, his name was erased from public monuments, and his son of the same name, daughter and granddaughter were exiled to Sicily. They were all strangled on Caracalla's orders in early 212.
Family
He married Hortensia and had:
Fulvia Plautilla
Gaius Fulvius Plautius Hortensianus. He was married to Aurelia, daughter of Lucius Aurelius Gallus consul in 174.