The title of this article is a conjectural. Though the topic is found within The Simpsons universe, a proper name is not available.
Jug Band Manager is Homer's relative, who appears when Homer tries to show Lisa how successful the Simpsons are.
He manages a jug band. He wears a blue jacket and pants, and a red shirt underneath. He also has a thin mustache. In the image to the right he stands to the left of Dr. Simpson.