As with most third-century Roman empresses, very little is known about her.[2] The date and place of her birth are not known for certain. She was probably from a senatorial family of
Herennia gens.[3][4] It is assumed that her ancestors settled in
Etrurian lands.[5] Herennia married Decius probably before 230,[5] therefore, Herennia was born in early 3rd century AD. She gained the title Augusta when Decius became emperor in 249 AD. After the death of both Decius and Herennius Etruscus in the
Battle of Abritus,
Trebonianus Gallus, the governor of
Moesia, was elected as emperor in June 251 AD.[6]
In order to gain popular support, Trebonianus Gallus retained Herennia Etruscilla as Augusta (empress-mother) and elevated
Hostilian to Augustus, making him co-emperor alongside Trebonianus Gallus himself.[7][8][9] Hostilian died in July 251, either from a
plague or murder,[7][8] after which Trebonianus Gallus' son
Volusianus, was raised to Augustus. In November 251 AD, Herennia survived the epidemic, in which her son
Hostilian died, retained the role of Augusta, despite any familial ties to Gallus and lived until 253 AD, corresponding to the end of his reign.[10][11]
Numismatics
Antoninianus of Herennia Etruscilla. Inscription: HER ETRVSCILLA AVG / FECVNDITAS AVG; 251 AD.
While information about her is scarce, coins with her portrait are numerous and easy to obtain. Legends on coins struck at Rome only ever give her name as 'Herennia Etruscilla' but
billontetradrachms struck at
Alexandria supply the Cupressenia element in abbreviation: ΕΡ ΚΟΥΠ ΑΙΤΡΟΥCΚΙΛΑ (
Greek: Her. Koup. Aitrouskila), showing that her full name was Herennia Cup(ressenia) Etruscilla.[12] The Cupressenia element is expanded from the 'ΚΟΥΠ' in the Alexandria coin legends, from the Latin cupresseus "
cypress tree" and symbol of
Juno.[13]
Francesco Scipione, Marchese di Maffei, Museum Veronense, hoc est, Antiquarum Inscriptionum atque Anaglyphorum Collectio (Museum of Verona, or a Collection of Antique Inscriptions and Reliefs).
Ludovico Antonio Muratori, Novus Thesaurus Veterum Inscriptionum (New Treasury of Ancient Inscriptions), Milan (1739-42).
Italics indicates a consort to a junior co-emperor, underlining indicates a consort to an emperor variously regarded as either legitimate or a usurper, and bold incidates an empress regnant.