Hi again, welcome to the Pottery board, now let's see if we can find anything about your jug.
I'm thinking that if we can pin down who it's portraying that we may be able to find out who made it... it looks like it's meant to be a real person as opposed to e.g. Bacchus or the Green Man.
Now, I see you're in South Africa, so can you give us a little background about it? How did it come to you, were you told anything about it which might give a clue as to its origins?