CAESAR MARCVS ANTONIVSGORDIANVS AVGVSTVS
Born: January 20, 225 AD, Rome
Reigned: April 22, 238 AD - February 11, 244 AD
Proclaimed emperor by supporters of Gordian I & II, then by the Senate; joint-emperor with Pupienus and Balbinus until July 238 AD.
Died: February 11, 244 AD Unknown; possibly murdered on orders of Philip the Arab

Gordian was the son of Antonia Gordiana and his father was an unnamed Roman Senator who died before 238. Antonia Gordiana was the daughter of Emperor Gordian I and younger sister of Emperor Gordian II. Very little is known on his early life before becoming Roman Emperor. Gordian had assumed the name of his maternal grandfather in 238.

Following the murder of emperor Alexander Severus in Moguntiacum (modern Mainz), the capital of the Roman province Germania Inferior, Maximinus Thrax was acclaimed emperor, despite strong opposition of the Roman senate and the majority of the population. In response to what was considered in Rome as a rebellion, Gordian's grandfather and uncle, Gordian I and II, were proclaimed joint emperors in the Africa Province. Their revolt was suppressed within a month by Cappellianus, governor of Numidia and a loyal supporter of Maximinus Thrax. The elder Gordians died, but public opinion cherished their memory as peace loving and literate men, victims of Maximinus' oppression.

Meanwhile, Maximinus was on the verge of marching on Rome and the Senate elected Pupienus and Balbinus as joint emperors. These senators were not popular men and the population of Rome was still shocked by the elder Gordian's fate, so that the Senate decided to take the teenager Gordian, rename him Marcus Antonius Gordianus as his grandfather, and raise him to the rank of Caesar and imperial heir. Pupienus and Balbinus defeated Maximinus, mainly due to the defection of several legions, namely the II Parthica who assassinated Maximinus. But their joint reign was doomed from the start with popular riots, military discontent and even an enormous fire that consumed Rome in June 238. On July 29, Pupienus and Balbinus were killed by the Praetorian guard and Gordian proclaimed sole emperor.