Well, actually, all of St. George's life story is apocryphal. But, hey, that's cool, 'cause he wound up absorbing lots of pre-Christian mythology and traditional folk rituals.

The story of him slaying the dragon is likely based on the classical myth of Perseus rescuing Andromeda from the sea monster.

In Slavic parts of Europe, St. George traditionally appeared on his feast day as "Green George", a man entirely encased in a cage of branches, looking just like the English "Jack-in-the-Green":

Green George in Slovenia

In the 16th century in England, St. George's parades marked the opening of the spring festive season. As Sandra Billington points out in her book _Mock Kings in Medieval Society and Renaissance Drama_, St. George, like Robin Hood, took on the role of a traditional Mock King or Lord of Misrule at these events.

Anyhow, here's my cyber-card to wish you all a (slightly belated) St. George's Day, complete with links to additional information about the meaning and history of this enigmatic figure:

SAINT GEORGE'S DAY GREETING CARD

Cheers, Hester