Catherine of Alexandria, also spelled Katherine is, according to tradition, a Christian saint and virgin, who was martyred in the early fourth century at the hands of the emperor Maxentius. According to her hagiography, she was both a princess and a noted scholar who became a Christian around the age of 14, converted hundreds of people to Christianity and was martyred around the age of 18. More than 1,100 years after Catherine's martyrdom, Joan of Arc identified her as one of the saints who appeared to and counselled her.

Saint Barbara, known in the Eastern Orthodox Church as the Great Martyr Barbara, was an early Christian Greek saint and martyr.