What happened April 238 AD

Gordian I died.

Meanwhile, Maximinus, now declared a public enemy, had already begun to march on Rome with another army. The senate's previous candidates, the Gordians, had failed to defeat him, and knowing that they stood to die if he succeeded, the senate needed a new emperor to defeat him. With no other candidates in view, on 22 April 238, they elected two elderly senators, Pupienus and Balbinus (who had both been part of a special senatorial commission to deal with Maximinus), as joint emperors. Therefore, Marcus Antonius Gordianus Pius, the thirteen-year-old grandson of Gordian I, was nominated as emperor Gordian III, holding power only nominally in order to appease the population of the capital, which was still loyal to the Gordian family.