Helena Augusta was a Roman Augusta and the mother of Emperor Constantine the Great. Born around 250 in Bithynia, she likely rose from a humble social background to become the partner of Emperor Constantius Chlorus. She played a significant role in the early expansion of Christianity during the 4th century. Following the reign of her son, she undertook a religious pilgrimage to the Holy Land, where tradition holds she discovered the True Cross. She died in Constantinople around 330 and is venerated as a saint in several Christian traditions.