Herennius Etruscus was the son of
Trajan Decius and older brother of
Hostilian. Decius elevated Herennius to co-emperor in
251. Herennius died with his father in the
Battle of Abrittus, after he was hit by an arrow; they were the first two emperors to be killed by a foreign army in battle. Though the army proclaimed
Trebonianus Gallus emperor, Herennius was succeeded by Hostilian.
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