Source: See page for author [Public domain], via Wikimedia Commons
Then he asked the princess to put her girdle around the dragon’s neck, and in this way they all approached the city. Greeted by the grateful inhabitants, George proclaimed the glory of God, who had sent him to free the city of the dragon’s plague. He baptized all the citizens on the central city square, one by one, and then slew the dragon in front of the crowd.
On the site, where the dragon died, the king built a church devoting it to the Blessed Virgin Mary and Saint George, and from its altar a spring arose whose waters cured from the diseases.
Pictures on this page ("St George and the Dragon", in order): Vittore Carpaccio. St. George Killing the Dragon,
St. George Baptising the Gentile, The Triumph of St. George. Taken from http://www.wikipaintings.org/en/vittore-carpaccio