Leprechauns have always been the unofficial mascot of St. Patrick’s Day, but if you bring them up to actual Irish people, chances are that you’ll get laughed out of the pub. So we decided to do our best to trace everyone’s favorite tiny, red-bearded men back to their origins. We’ll pinpoint their journey from mythological creatures to breakfast cereal mascots. Here are all the facts we know about leprechauns. 1….