Description
The oldest record of the details of Sebastian’s martyrdom is found in the Chronograph of 354, which mentions him as a martyr, venerated on January 20. He is also mentioned in a sermon on Psalm 118 by 4th-century bishop Ambrose of Milan (Saint Ambrose): in his sermon, Ambrose stated that Sebastian came from Milan and that he was already venerated there at that time. The full account of his martyrdom comes from the Passio Sancti Sebastiani, a 5th century text written by an anounymous author, possibily Arnobius the Younger.
Saint Sebastian is a popular male saint, especially today among athletes. In medieval times, he was regarded as a saint with a special ability to intercede to protect from plague, and devotion to him greatly increased when plague was active.