For his chivalry and bravery because he rescues a princess from a dragon.

Roman Catholic AnswerSt. George, who feast day is April 23 was killed for the faith in Lydda, Israel, before the reign of Emperor Constantine and may have been a soldier in the imperial army. Because he has been such a popular saint for so many centuries (he was venerated in England as early as the eighth century and named patron of the Crusades, his red cross on a white background later became the basis for British military uniforms, the country's Union flag , and the decorations of the Order of the Garter) there have been many pious legends, which cannot be proved. In medieval mystery plays, St. George was always represented as killing a dragon. In Germany and Austria on eve of his feast day boys cracked whips to help the saint drive demons away. In Poland, farmers lighted fires in their yards to frighten evil spirits away. On the morning of his feast, the dew was mixed into the fodder to make the animals immune from attacks of demons or witches. Polish farmers have a fairy tale that St. George lives in the moon, which the Blessed Mother gave him as a reward for his great deeds. extracted fromEncyclopedia of Catholic Devotions and Practices by Ann Ball, Our Sunday Visitor, Inc. C 2003