Helena was born around the middle of the third century AD, probably into a family of modest standing. Her exact birthplace is uncertain. She became the mother of Constantine, who later ruled the Roman Empire. Constantine’s father, Constantius Chlorus, separated from Helena as his political career advanced. The precise legal status of their earlier relationship remains debated. After Constantine rose to power, Helena gained exceptional standing in the imperial family. She received the title Augusta and appeared on imperial coins. Although she was not a reigning monarch, she had the resources and authority to support religious and charitable projects. Around AD 327–328, when she was already elderly, Helena traveled through the eastern provinces and visited Palestine. Eusebius of Caesarea, writing within a few years of her death, describes her devotion and generosity. He credits her with churches at Bethlehem, associated with Jesus’ birth, and on the Mount of Olives, associated with his Ascension. Constantine supported these projects with imperial funds and gifts. Helena also gave money and clothing to people in need and helped prisoners and others suffering hardship. Eusebius presents her as a devout Christian who joined ordinary worshipers in church despite her high rank. A famous later tradition says that Helena found the True Cross during her visit to Jerusalem. That story became an important part of Christian memory, but Eusebius does not report it. Later Christian writers developed the account, and historians distinguish this tradition from what can be established from contemporary testimony. Helena died around AD 328 or 329. Her pilgrimage and patronage left a lasting mark on Christian worship and the geography of the Holy Land.