What is the connection between Leprechauns and the pot of gold they hide and Saint Patrick's Day?

The pot of "gold" really is not gold at all. It is where the Leprechauns hide the souls that they so love to eat >: )
around when st Patrick day became associated, few years later some genius came up with a leprechaun to be a person at the end of the rainbow who hogs the gold. if you touch the "gold" they say the leprechaun will find u and steal the gold. i possibly think that after Patrick defined st Patrick's day they said a leprechaun was pronounced a lucky creature. So comment tell me what you think and i will see if its true or you can look on google and look your question up.