3rd-century murdered monarchs

Marcus Aurelius Antoninus (born Lucius Septimius Bassianus, 4 April 188 – 8 April 217), better known by his nickname Caracalla (; ), was Roman emperor from 198 to 217 AD, first serving as nominal co-emperor under his father and then ruling alone after 211 AD. He was a member of the Severan dynasty, the elder son of Emperor Septimius Severus and Empress Julia Domna. Severus proclaimed Caracalla co-ruler in 198, doing the same with his other son Geta in 209. The two brothers briefly shared power after their father's death in 211, but Caracalla soon had Geta murdered by the Praetorian Guard

Aurelian (; ; 9 September ) was a Roman emperor from 270 to 275 during the Crisis of the Third Century. During his reign, he won an unprecedented series of military victories which reunited the Roman Empire after it had nearly disintegrated under the pressure of barbarian invasions and internal revolts. For his success in restoring the Empire's territorial integrity, Aurelian was honored with the title ("Restorer of the World").

Marcus Aurelius Antoninus (born Sextus Varius Avitus Bassianus, 204 – 13 March 222), better known by his posthumous nicknames Elagabalus ( ) and Heliogabalus ( ), was Roman emperor from 218 to 222, while he was still a teenager. His short reign was notorious for religious controversy and alleged sexual debauchery. A close relative to the Severan dynasty, he came from a prominent Syrian Arab family in Emesa (Homs), Syria, where he served as the head priest of the sun god Elagabal from a young age. After the death of his cousin, the emperor Caracalla, Elagabalus was raised to the Principate at 1

Roman Emperor (208-235)

Marcus Opellius Macrinus (; – June 218) was a Roman emperor who reigned from April 217 to June 218, jointly with his young son Diadumenianus. Born in Caesarea (now called Cherchell, in modern Algeria), in the Roman province of Mauretania Caesariensis to an equestrian family of Berber origins, he became the first emperor who did not hail from the senatorial class and also the first emperor who never visited Rome during his reign. Before becoming emperor, Macrinus served under Emperor Caracalla as a praetorian prefect and dealt with Rome's civil affairs. He later conspired against Caracalla and

Roman Emperor (173-238)

Roman emperor (225-244)

Publius Licinius Egnatius Gallienus (, ; – September 268) was Roman emperor with his father Valerian from 253 to 260 and alone from 260 to 268. He ruled during the Crisis of the Third Century that nearly caused the collapse of the empire. He won numerous military victories against usurpers and Germanic tribes, but was unable to prevent the secession of important provinces. His 15-year reign was the longest in half a century.

Roman emperor from 209 to 211

3rd-century Roman Emperor (232-282)

Marcus Aemilius Aemilianus ( – September 253), also known as Aemilian, was Roman emperor for two months in 253.

Marcus Clodius Pupienus Maximus ( 164–238) was Roman emperor with Balbinus for 99 days in 238, during the Year of the Six Emperors. The sources for this period are scant, and thus knowledge of the emperor is limited. In most contemporary texts he is referred to by his cognomen "Maximus" rather than by his second nomen (family name) Pupienus ().

Roman emperor from 275 to 276

Decimus Caelius Calvinus Balbinus (July/August 238 AD) was Roman emperor with Pupienus for three months in 238, the Year of the Six Emperors.

Roman Emperor from 251 to 253 (206-253)

Diadumenian ( ; ; 14September 208 – June 218) was the son of the Roman emperor Macrinus and served as his co-ruler for a brief time in 218. His mother, Macrinus' wife, is called Nonia Celsa in the unreliable , though this name may have been fictional. Diadumenian became in May 217, shortly after his father's accession to the imperial throne. Elagabalus, a relative of the recently deceased Caracalla, revolted in May of the following year, and Diadumenian was elevated to co-emperor. After Macrinus was defeated in the Battle of Antioch on 8 June 218, Diadumenian was sent to the court of Artabanus

Marcus Annius Florianus (died 276), also known as Florian, was briefly Roman emperor in the year 276. He took the throne after the murder of his half-brother Tacitus, but was killed after 88 days by his own troops during his confrontation with the rival emperor Probus, who took over the Eastern provinces after Tacitus' death.

thumb|A Roman Antoninianus|radiate produced in 283 depicting Emperor Carinus. From the collection of [[York Museums Trust. Legend: M. AVR. CARINVS NOB. CAES.]]

Gaius Vibius Volusianus (Latin: Gaius Vibius Afinius Gallus Veldumnianus Volusianus; died August 253), commonly called Volusian, was a Roman emperor from 251 to 253, ruling with his father Trebonianus Gallus.

Numerian (; died November 284) was Roman emperor from 283 to 284 with his older brother Carinus. They were sons of Carus, a general raised to the office of praetorian prefect under Emperor Probus in 282.

Publius Licinius Cornelius Saloninus Valerianus (died 260), typically just called Saloninus, was a young Roman nobleman who briefly became emperor in 260. The grandson of Valerian I, Saloninus was appointed caesar (heir) in 258 in an attempt to shore up the Licinian line of succession during the Crisis of the Third Century. During his time in power, Saloninus administered the German marches out of Cologne. Nevertheless, Saloninus soon became embroiled in a dispute with future Gallic emperor Postumus over war spoils. In 260, Saloninus' troops acclaimed him augustus (emperor) in an unsuccessful

Marcus Cassianius Latinius Postumus ( 259–269) was a Roman commander of Batavian origin, who ruled as emperor of the splinter state of the Roman Empire known to modern historians as the Gallic Empire. The Roman army in Gaul threw off its allegiance to emperor Gallienus around the year 260, and Postumus assumed the title and powers of Emperor in the provinces of Gaul, Germania, Britannia, and Hispania. He ruled for the better part of ten years before he was murdered by his own troops.

Marcus Aurelius Mausaeus Carausius (died 293) was a military commander of the Roman Empire in the 3rd century. He was a Menapian from Belgic Gaul, who usurped power in 286, during the Carausian Revolt, declaring himself emperor in Britain and northern Gaul (Imperium Britanniarum). He did this only 13 years after the Gallic Empire was ended in 273. He held power for seven years, fashioning the name "Emperor of the North" for himself, before being assassinated by his finance minister Allectus.

consul of the Roman Empire (237-249)

emperor of the Roman Gallic empire in 269

Marcus Piavonius Victorinus was emperor in the Gallic provinces from 268 to 270 or 269 to 271, following the brief reign of Marius. He was murdered by a jealous husband whose wife he had tried to seduce.

Laelian (; ), also incorrectly referred to as Lollianus and Aelianus, was a usurper against Postumus, the emperor of the Gallic Empire. His revolt lasted from approximately late February to early June 269.

Cao Wei emperor from 254 to 260

3rd-century Roman usurper

Armenian king from 252 to 258

usurper of the Roman Empire during 271 or 272

co-king of Palmyra from 263 to 267