MEDIEVAL (4th Century to 15th Century AD - This is NOT Georgian or Victorian as a lot of people seem to think!  Georgian was 300 years later and Victorian 400 years later) Medieval seems to be the hardest theme to grasp, judging by what presents in the Pageant.  Think Dragons (mythical - they didn't really exist), Merlin, King Arthur, Outlander, Joan of Arc.  It spans 11 centuries, so there is plenty to choose from.