Tullius Crispinus was Praetorian Prefect with Titus Flavius Genialis in 193 AD. He was appointed by

Didius Julianus Marcus Didius Julianus (; 29 January 133 or 137 – 2 June 193) was Roman emperor for nine weeks from March to June 193, during the Year of the Five Emperors. Julianus had a promising political career, governing several provinces, including Da ...

, who had just bought the throne from the guard. Didius Julianus had planned to name

Septimius Severus Lucius Septimius Severus (; 11 April 145 – 4 February 211) was Roman emperor from 193 to 211. He was born in Leptis Magna (present-day Al-Khums, Libya) in the Roman province of Africa. As a young man he advanced through the customary suc ...

his co-emperor and sent Crispinus to deliver the offer. Severus killed him and thus declined the offer.

Sources

* '' Historia Augusta'', ''Life of Didius Julianus'' * Anthony R. Birley, ''Septimius Severus: The African Emperor'', p. 99 * Anthony R. Birley, ''Lives of the Later Caesars'', pp. 197-198 2nd-century Romans Praetorian prefects Tullii {{AncientRome-bio-stub