Saint Sebastian was an early Christian saint and martyr. According to traditional belief, he was killed during the Roman emperor Diocletian's persecution of Christians. He was initially tied to a post or tree and shot with arrows, though this did not kill him. Wikipedia
Master E. S. (c. 1420 – c. 1468; previously known as the Master of 1466) is an unidentified German engraver, goldsmith, and printmaker of the late Gothic period. He was the first major German artist of old master prints and was greatly copied and imitated. The title, Master, is used for unidentified artists who operated independently. He was probably the first printmaker to place his initials on his work.