Gordian III (29 July 238 - 11 February 244CE). Marcus Antonius Gordianus became Caesar under the joint rule of Balbinus and Pupienus, and was proclaimed Augustus upon their assassinations thus becoming the youngest sole legal Roman emperor at the age of 13. Most of the government early in his reign was performed by the Senate. In 241, Gordian married Tranquillina, daughter of the Praetorian Prefect Timesitheus. Timesitheus thus became the de facto ruler. Gordian died in unclear circumstances, and was deified by the Senate.