wife of the emperor Decius. The name not being mentioned in history, it was a matter of dispute to what princess the coins bearing the legend Herennia Etruscilla Augusta were to be assigned, until a stone was found at Carseoli with the inscription HERENNIAE. CUPRESSENIAE. ETRUSCILLAE. AUG. CONIUGI. D. N. DECI. AUG. MATRI. AUGG. NN. ET. CASTROR. S. P. Q., from which, taken in combination with medals, it appears that her designation in full was Annia Cupressenia Herennia Etruscilla. (Muratori, p. 1036, 4; Maffei, Mus. Veron. p. 102; Eckhel, vol. vii. p. 347.)
[W.R]A Dictionary of Greek and Roman biography and mythology
Smith, William
A Dictionary of Greek and Roman biography and mythology. William Smith, LLD, ed. 1890