Clurichaun
The Clurichaun is thought to be the surly drunken cousin of the famous Irish Leprechaun. Clurichauns are supposed to protect your wine cellar if you treat them well – but if you do not, they mess up your house and spoil your wine.
If you incur the wrath of a Clurichaun by stealing wine or being a drunkard, he will torment you endlessly, hiding in a cask to follow you wherever you move.
So basically, this is the brother-in-law of the Leprechaun world