Quintus Herennius Etruscus Messius Decius was the son of
Decius, a Roman general who later became emperor, and
Herennia Etruscilla, his wife. His birth date is sometimes given between 220 and 230, but there is no way to confirm this. Etruscus was probably a young boy when he was proclaimed emperor in 251, as depicted in his coins. Decius became emperor after being sent to lead troops in the provinces of
Pannonia and
Moesia, where he was declared emperor by his troops in September 249, in opposition to
Philip the Arab. He led his troops against Philip, their forces meeting in September 249, near
Verona, Italy. In this battle, Philip was slain, after which the
Roman Senate declared Decius emperor, and honored him with the name Traianus, a reference to Emperor
Trajan. Both Herennius Etruscus and his younger brother
Hostilian were elevated to in 250, and in May 251 Herennius Etruscus was elevated to , making him co-emperor under Decius. He was also made
consul for 251. In 249, the
Goths, led by King
Cniva, invaded the
Danubian provinces of the Roman Empire with a huge force. They split into two columns; one column launched an assault on
Dacia, and the other force, made up of 70,000 men, and personally led by Cniva, invaded Moesia. Cniva's forces further split into two groups; one marched to assault
Philippopolis, and the other marched to
Novae. Cniva was prevented from laying siege to Novae by
Trebonianus Gallus, the governor of Moesia and future emperor, and thus moved south, on to
Nicopolis. By this time news of the invasion reached Rome, and both Decius and Herennius Etruscus traveled to repulse the Gothic invasion, although Hostilian remained in Rome. Herennius Etruscus was sent forward with a
vanguard, followed by the main body of Roman forces, led by Decius. Decius and Herennius Etruscus took the Gothic forces by surprise in the
Battle of Nicopolis, and beat them decisively. Following the crushing defeat, Cniva retreated over the
Haemus Mons (
Balkan Mountains), and met up with his other forces at Philippopolis. Cniva then ambushed the forces of Decius and Herennius Etruscus at the
Battle of Beroe, near the small town of
Beroca at the base of the Haemus Mons. The Roman forces were beaten decisively in this engagement and fled in disarray to Moesia where Decius and Herennius Etruscus worked to reorganize them. Cniva then returned to Philippopolis, and with the help of
Titus Julius Priscus, the Roman governor of
Thrace, managed to capture the city. Decius and Herennius Etruscus launched a counterattack in spring 251 and were initially successful in pushing back the Goths. However, Cniva set an ambush for them, in June 251, near
Abritus (modern-day
Razgrad,
Bulgaria). In
this battle, both Decius and Herennius Etruscus were killed. The exact circumstances of the death of Herennius Etruscus are vague. The main source for the event,
Aurelius Victor, says only that Herennius Etruscus was killed when he "pressed the attack too boldly". Aurelius Victor specifies that he was acting as an , commanding troops from a distance but not physically engaging in the combat, rather than a commilito, who physically fought in the battle. After the news of his death reached Decius, he refused to be consoled, stating that the loss of one life was minor to a battle, and thus continued the combat, in which he was also slain. The death of Decius is similarly obscure, although it is agreed upon that he must have died either during the battle, as a , during the retreat from the battle, or else was slain while serving as . The reserve forces of Trebonianus Gallus failed to reinforce the main army in time to save Decius and Herennius Etruscus, although whether this was due to treachery or misfortune is unknown. After the death of both Decius and Herennius Etruscus, and much of the Roman army with them, the remaining forces immediately elected
Trebonianus Gallus, the governor of Moesia, as emperor. Trebonianus Gallus made peace with Cniva on humiliating terms, allowing them to keep their prisoners and spoils in order to secure peace. In order to gain popular support, Trebonianus Gallus retained Herennia Etruscilla as
Augusta (empress), and elevated Hostilian to , making him co-emperor alongside Trebonianus Gallus himself. Hostilian died in November 251, either from a plague or murder, after which
Volusianus, Trebonianus Gallus' son, was raised to . After Trebonianus Gallus was overthrown by
Aemilianus in 253, Herennia Etruscilla faded into obscurity. ==References==