Marcus Aemilius Aemilianus was a senator of African origins, born c. 200. His cursus honorum remains unknown, though he must have been an important and efficient stateman to be appointed legatus Augusti pro praetore of Moesia Superior by Trebonianus Gallus in 252/3. In July 253, in a context of military crisis resulting from the victory of the Persians over the Romans at Barbalissus, he was proclaimed emperor by his troops. He then attacked Trebonianus Gallus in Italy and defeated him near Interamna in August 253. Aemilian was himself killed a few weeks later in September near Spoleta, during a fight against another usurper, the future emperor Valerian. Another usurper named Silbannacus is attested at the end of his reign.