The year of birth of Macrianus is not known precisely. Macrianus's full name is Titus Fulvius Iunius Macrianus. Macrianus became the emperor of the Roman state in 260 .
Macrianus is one of the commanders who rebelled in the Roman state and declared himself an emperor. Macrianus's father is the richest of the Roman state. In this regard, all the military units in Eastern Rome accepted the Macrianus's empire. Also Egypt accepted Macrianus as an emperor. In those years, the Egyptian greeted almost all the grain needs of the Roman state. On this count, Macrianus fixed food problems to the army.
But in 261 Gallienus's commander Aurelous fought against Macrianus. And Macrianus has lost this war. Macrianus was killed by his own soldiers.