Golden Legend

…de Voragine’s Legenda aurea (1265–66; Golden Legend) repeats the story of his rescuing a Libyan king’s daughter from a dragon and then slaying the monster in return for a promise by the king’s subjects to be baptized. George’s slaying of the dragon may be a Christian version of the Greek…

…and the author of the Golden Legend.

…possible; the most celebrated was The Golden Legend of the 15th century, which included approximately 200 stories of saintly virtue and martyrdom.