They are different stories about her death. According to one of them, her father beheaded her, when he learned of her conversion to Christianity. Allegedly she was killed by a bolt from the blue. According to another story, her father gave her to the Roman courts. After a long torture and useless persuasion to abandon Jesus, she was executed during some of the waves of Christian persecution in the Roman Empire, probably during the reign of emperor Maximian Galerius (reigned from 305-311 AD).
St. Barbara is depicted in Christian iconography with the chalice and communion (which reportedly gave her an angel before her execution), cross, peacock feather, a miniature of the tower, where she was kept. She is the patroness of all professions, with a danger of sudden death, not only miners, but also artillery, firefighters, bell molders and others. And from not very well known reasons, also mathematicians and architects. She also protects against lightning and plague hits. In the past, her picture hanged on the warships above the chamber with the storage of gunpowder.
Her great admirer was Pope Gregory I (540-604 AD). In the 15th century, she was included among the 14 helpers in need, patrons to be taken to pray, in the worst situation. Her memorial is celebrated on the 4th December.