What German family owns Trader Joe's?

Could you clarify who or what Trader Joe's is, and why we would be discussing a German family's ownership of it? As far as I'm aware, Trader Joe's is an American chain of grocery stores known for its unique products and affordable prices. It is not a company typically associated with German ownership. Could there be a misunderstanding or a different company you're referring to? If you're asking about the origins or ownership structure of Trader Joe's, I would be happy to provide that information, but it's important to start with the right context.