Caption:
Flavia Julia Helena Augusta, Saint Helena or Helena of Constantinople, c. 246-330, Empress of the Roman Empire, wife of Constantius, mother of Emperor Constantine the Great. Wearing a Greek-style royal diadem from a bronze coin. Santa Helena. Copperplate engraving by Etienne Picart after Giovanni Angelo Canini from Iconografia, cioe disegni d'imagini de famosissimi monarchi, regi, filososi, poeti ed oratori dell' Antichita, Drawings of images of famous monarchs, kings, philosophers, poets and orators of Antiquity, Ignatio deLazari, Rome, 1699.